Question

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Multiply:-
$(x - 1)(x + 1)$

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Answer 1

Answer:

$x^{2} -1$

Answer 2

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Expand (x−1)(x−1)(x-1)(x-1) using the FOIL Method.

x⋅x+x⋅−1−1x−1⋅−1x⋅x+x⋅-1-1x-1⋅-1

Simplify and combine like terms.

x2−2x+1x2-2x+1