Question

find value of k if (2x +1) is the factor of 4x³+4x²+kx- 1.​

Answer 1

Answer:

if 2x+1 is a factor then we have that 2x+1=

x = -1/2

hence this should satisfy the given

equation

4x^2-kx+k=0 4(-1/2)^2-k(-1/2)+k = 0

1+k/2+k = 0

3k/2 = -1

k = -2/3

hence the value of k is -2/3

vedha03. Expert