Question

Give that (x+2) us a factor is 2x^2+kx-10, which of the following is the value of k?

A- -3
B- 3
C- 1
D- -1

Answer 1

2 * -10 = -20
so the factors taken are 2 and -5

k = -5 + 2*2 = - 1


Its D