Question

$({x}^{2} - 1 + 2x)( {x}^{2} - 1 - 2x)$
explain this question​

Answer 1

Answer:

(x²-1+2x) (x²-1-2x)

→x²(x²-1-2x) -1(x²-1-2x)+ 2x(x²-1-2x)

→( x⁴- x²- 2x³) -(x²-1-2x)+ (2x³- 2x+ 4x²)

→ x⁴- x²- 2x³ -x²+ 1+ 2x+ 2x³- 2x+ 4x²

→ x⁴+2x²+ 1- 2x

Answer 2

Simplify (x+2)3=2x(x2−1) and check whether its is a quadratic equation.