Question

factorize x4+2x3-2x-1

Answer 1

Factorize x⁴+2x³-2x-1
(x⁴-1)+(2x³-2x)
(X²-1)(X²+1) + 2X(X²-1)
(X²-1)(X²+1 +2X)
(X+1)(X-1)(X²+1 +2X)