Question

2x^3+x^2-2x-1 FACTORIES by factor therom​

Answer 1

Step-by-step explanation:

x+1=0

x= -1

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

=2×(-1)^3+(-1)^2-2×-1-1

=2×-1+1+2-1

=-2+1+2-1

=-1+1

=0