Algebraeasy · Past Paper

The product of (x+1), (x-1) and (x^2+1) is:

Ax^4 - 1
Bx^4 + 1
C(x^2-1)^2
Dx^3 - 1

✓ Correct Answer: Ax^4 - 1

(x+1)(x-1) = x^2-1. (x^2-1)(x^2+1) = x^4-1.

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