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Multiplying Out Two Brackets and Simplifying

In this worksheet, students multiply out two binomials.

'Multiplying Out Two Brackets and Simplifying' worksheet

Key stage:  KS 3

Curriculum topic:   Algebra

Curriculum subtopic:   Simplify Algebraic Expressions to Maintain Equivalence

Difficulty level:  

Worksheet Overview

In this worksheet, you must multiply out two algebraic brackets.



When we multiply out brackets we split the first bracket and multiply each term by the second bracket, as follows:

(a + b)(c) = a(c) + b(c)

(a - b)(c) = a(c) - b(c)


(Remember - when we write a(c), we could also write this as a x (c)

So that's with one value in the second bracket, but what if we had two?


1) (a + b)(c + d) = a(c + d+ b(c + d)

=  ac + ad + bc + bd


Now we have the basics we're going to apply this to some more complex maths.  Remember, the process is exactly the same, even if it looks a bit more intimidating.  



(x + 3)(x - 6) = x(x - 6) + 3(x - 6) = x- 6x + 3x - 18
= x- 3x - 18

(2x - 1)2 = (2x - 1)(2x - 1) = 2x(2x - 1) - 1(2x - 1) = 4x- 2x - 2x + 1
= 4x- 4x + 1

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