Question

If( 2x-3) is a factor of (2x^4-3x^2+15x-15k), find the value of( 3k-root5 k)

Answer 1

since 2x-3 is a factor ,3/2 is the zero of the polynomial

2(81/16)-3(9/4)+15(3/2)-15k=0

81/8-27/4+45/2-15k=0

81-54+180=120k

207 =120k
k=1.725
by substituting ,we get

5.175-3.857=

1.318

I hope this will help u