Question

(x + 1)3 − x (x − 2)2 − 1

Answer 1

This simplifies to 7x^2 - x.

Explanation:

(x + 1)3 − x (x − 2)2 − 1

= x^3 + 3x^2 + 3x + 1 - x(x^2 - 4x + 4) - 1

= x^3 + 3x^2 + 3x + 1 - x^3 + 4x^2 -4x - 1

= 7x^2 - x

Answer 2

x = -0.27 or 3.77

Explanation:

explanation in pic