GCSE Maths Practice: algebraic-proof

Question 11 of 11

This question practices factoring a difference of squares.

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\( \text{Prove that } x^2 - y^2 = (x - y)(x + y). \)

Choose one option:

Multiply terms carefully and check cancellation of cross terms.

Use the formula x^2 - y^2 = (x-y)(x+y) to verify identities.