Question

(b) (x - 1)(x²+2x+1)
(x+1)(x2-
2x+1)
$(x - 1)(x2 + 2x + 1) - (x + 1)(x2 - 2x + 1)$
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Answer 1

Answer:

2x^2

Step-by-step explanation:

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

=(x^3 + 2x^2 + x - x^2 - 2x - 1) - (x^3 - 2x^2 + x + x^2 - 2x + 1)

= x^3 + x^2 - x - 1 - x^3 + x^2 + x + 1

=2x^2