GCSE Maths Practice: algebraic-proof

Question 6 of 11

Practice the difference of squares for x+1 and x-1.

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\( \text{Prove that } (x + 1)(x - 1) = x^2 - 1. \)

Choose one option:

Remember to square both terms correctly and simplify.

Squaring each term and subtracting yields the identity.