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Equations Reducible To Quadratics
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x  
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x   no real solutions
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x   no real solutions
6x  
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x   no real solutions
6x  
 ( ) 9 4 3 3 0x x
ii   
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x   no real solutions
6x  
 ( ) 9 4 3 3 0x x
ii   
let 3x
m 
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x   no real solutions
6x  
 ( ) 9 4 3 3 0x x
ii   
let 3x
m 
   
22 2 2
3 3 3 9
xx x x
m    
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x   no real solutions
6x  
 ( ) 9 4 3 3 0x x
ii   
let 3x
m 
   
22 2 2
3 3 3 9
xx x x
m    
2
4 3 0m m  
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x   no real solutions
6x  
 ( ) 9 4 3 3 0x x
ii   
let 3x
m 
   
22 2 2
3 3 3 9
xx x x
m    
2
4 3 0m m  
  3 1 0m m  
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x   no real solutions
6x  
 ( ) 9 4 3 3 0x x
ii   
let 3x
m 
   
22 2 2
3 3 3 9
xx x x
m    
2
4 3 0m m  
  3 1 0m m  
3 or 1m m 
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x   no real solutions
6x  
 ( ) 9 4 3 3 0x x
ii   
let 3x
m 
   
22 2 2
3 3 3 9
xx x x
m    
2
4 3 0m m  
  3 1 0m m  
3 or 1m m 
3 3 or 3 1x x
 
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x   no real solutions
6x  
 ( ) 9 4 3 3 0x x
ii   
let 3x
m 
   
22 2 2
3 3 3 9
xx x x
m    
2
4 3 0m m  
  3 1 0m m  
3 or 1m m 
3 3 or 3 1x x
 
1x 
Equations Reducible To Quadratics
4 2
e.g. ( ) 4 12 0i x x  
2
let m x
2 4
m x
2
4 12 0m m  
  6 2 0m m  
6 or 2m m  
2 2
6 or 2x x  
6x   no real solutions
6x  
 ( ) 9 4 3 3 0x x
ii   
let 3x
m 
   
22 2 2
3 3 3 9
xx x x
m    
2
4 3 0m m  
  3 1 0m m  
3 or 1m m 
3 3 or 3 1x x
 
1x  or 0x 
Exercise 8D; 1, 2ad, 3b, 4ab, 5ac, 6a, 8abi, 9a*

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11 x1 t10 03 equations reducible to quadratics (2013)

  • 2. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x  
  • 3. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x
  • 4. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x
  • 5. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m  
  • 6. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m  
  • 7. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m  
  • 8. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x  
  • 9. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x  
  • 10. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x   no real solutions
  • 11. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x   no real solutions 6x  
  • 12. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x   no real solutions 6x    ( ) 9 4 3 3 0x x ii   
  • 13. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x   no real solutions 6x    ( ) 9 4 3 3 0x x ii    let 3x m 
  • 14. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x   no real solutions 6x    ( ) 9 4 3 3 0x x ii    let 3x m      22 2 2 3 3 3 9 xx x x m    
  • 15. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x   no real solutions 6x    ( ) 9 4 3 3 0x x ii    let 3x m      22 2 2 3 3 3 9 xx x x m     2 4 3 0m m  
  • 16. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x   no real solutions 6x    ( ) 9 4 3 3 0x x ii    let 3x m      22 2 2 3 3 3 9 xx x x m     2 4 3 0m m     3 1 0m m  
  • 17. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x   no real solutions 6x    ( ) 9 4 3 3 0x x ii    let 3x m      22 2 2 3 3 3 9 xx x x m     2 4 3 0m m     3 1 0m m   3 or 1m m 
  • 18. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x   no real solutions 6x    ( ) 9 4 3 3 0x x ii    let 3x m      22 2 2 3 3 3 9 xx x x m     2 4 3 0m m     3 1 0m m   3 or 1m m  3 3 or 3 1x x  
  • 19. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x   no real solutions 6x    ( ) 9 4 3 3 0x x ii    let 3x m      22 2 2 3 3 3 9 xx x x m     2 4 3 0m m     3 1 0m m   3 or 1m m  3 3 or 3 1x x   1x 
  • 20. Equations Reducible To Quadratics 4 2 e.g. ( ) 4 12 0i x x   2 let m x 2 4 m x 2 4 12 0m m     6 2 0m m   6 or 2m m   2 2 6 or 2x x   6x   no real solutions 6x    ( ) 9 4 3 3 0x x ii    let 3x m      22 2 2 3 3 3 9 xx x x m     2 4 3 0m m     3 1 0m m   3 or 1m m  3 3 or 3 1x x   1x  or 0x 
  • 21. Exercise 8D; 1, 2ad, 3b, 4ab, 5ac, 6a, 8abi, 9a*