Question

Is (x+1)is a factor of xcube_2xsquare+x_1,verify​

Answer 1

Answer:

$= {x}^{2} + x - 1 \\ \\ = { -1 }^{2} - 1 - 1 \\ \\ = - 3 \\ \\ hence \\ \\ it \: \: \: \: is \: \: \: not \: \: \: fctor$