# algebra

Simplify (x+1)(x2+x-1) that should be x squared. the superscript didn't carry over.

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1. (x + 1)(x^2 + x - 1)
=x (x^2 + x - 1) +1 (x^2 + x - 1)
distributive property of multipication
= x^3 + x^2 - x + x^2 + x - 1

= x^3 + 2 x^2 - 1

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posted by Damon
2. Thanks!

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posted by mel

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