Question

Check whether 4xcube+4xsquare-x-1 is a multiple of (2x+1)

Answer 1

Answer:

yes it is the multiple of 2x+1

Step-by-step explanation:

(2x+1)

2x=-1

x=-1/2

4x3+4x2-x-1

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

4(-1/8)+4(1/4)+1/2-1

-1/2+1+1/2-1

=0