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Expand brackets 4

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Expand brackets 4

  1. 1. Expand Brackets January 28, 2015 This means ‘get rid’ of the brackets in cases like: 3(x + 2) 4(2x + 3) x(x + 3) 3(x – 2) + 2(x – 3) (x + 3)(x – 2) Low C C B
  2. 2. x(x + 4) – 3(x + 2) x X (x + 4) – 3 X (x + 2) Take care with the minus sign
  3. 3. x(x + 4) – 3(x + 2) x X (x + 4) – 3 X (x + 2) x X x + x X 4 – 3 X x – 3 X 2 Now, it’s –3 times x and –3 times 2 Take care with the minus sign
  4. 4. x(x + 4) – 3(x + 2) This means x times (x + 4) This means -3 times (x + 2) x X (x + 4) – 3 X (x + 2) x X x + x X 4 – 3 X x – 3 X 2 x2 + 4x – 3x – 6 Now, it’s –3 times x and –3 times 2
  5. 5. x(x + 4) – 3(x + 2) This means x times (x + 4) This means -3 times (x + 2) x X (x + 4) – 3 X (x + 2) x X x + x X 4 – 3 X x – 3 X 2 x2 + 4x – 3x – 6 x2 + x – 6 Now, it’s –3 times x and –3 times 2 Tidy up
  6. 6. x(x + 4) – 3(x + 2) This means x times (x + 4) This means -3 times (x + 2) x X (x + 4) – 3 X (x + 2) x X x + x X 4 – 3 X x – 3 X 2 x2 + 4x – 3x – 6 x2 + x – 6 Now, it’s –3 times x and –3 times 2 Tidy up

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