ppt on algebraic fractions

1. Algebraic fractions
Multiplying and dividing
fractions

2. Objective
To simplify the algebraic fractions

3. Warm up: Simplify
4
5
2
12
20
2)
4
5
3
1)



4. Multiplying and dividing fractions
Reminder: The product of two fractions is found by
multiplying the numerators and denominators
Eg:
p a b
qa
p a b
( 
)
a b
a
p
q
a b
( 
)
a
a b
p
p
q
q a b
a b
q
( )
2)
( )
( )
1)



 







5. Note: it is sometime possible to simplify before
multiplying by cancelling common factors
Eg:
y
x
y
x
x
y
 
x
2
y
x
y
b
a
a
ab
2
4 2 8
2
4
2)
8 2
4
1)
2
2
2
   

6. Class work: Pg : 44,45 Q1to 6& Pg:
45 Q11 to 15
Assessment: Pg 45 Q7 ,Q 16,17
Home work: Pg 45 Q8 to 10, 18 to 22