Question

Descompuneti in factori ,grupand mai intai convenabil termenii: 2x³-2x²+7ax-7a=?
x^{4} - x^{3}+2x-2

Answer 1

$2x^3-2x^2+7ax-7a=2x^2(x-1)+7a(x-1)=(x-1)(2x^2+7) \\ \\ x^4-x^3+2x-2=x^3(x-1)+2(x-1)=(x-1)(x^3+2)$