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Maths

Re-arranging symbols

Multiplying out two brackets - Higher

When we multiply out a pair of brackets, everything in the second bracket has to be multiplied by everything in the first bracket.

One way to multiply out a pair of brackets is by taking each term in the first bracket and multiplying it against the second bracket.

Example

Multiply out these two brackets:

(x + 4) (x + 3)

  • Multiply everything in the first bracket by the second bracket:
  • x (x + 3) + 4 (x + 3)
  • = x2 + 3x + 4x + 12
  • = x2 + 7x + 12

Try the activity below.

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