Question

Find the remainder when

       4x³+4x²-x-1 is divided by 2x+1.​

Answer 1

Answer:

Let P(x)=4x3+4x2-x-1

if p(x) is divided by2x+1,then remainderP(-1/2)

=4(-1/2)^3+4(-1/2)^2-(-1/2)-1

=4×(-1/8)+4×1/4+1/2-1

=-2+1+1/2-1

=-2+1/2

=-3/2