Question

if x+1 is a factor of the polynomial 2x×x + kx, then the value of k is :​

Answer 1

Answer:

x+1 is a factor of the polynomial 2x2+kx, then the value of k is. Hence , the value of k is 2.Aug 23, 2019

Answer 2

It is given that X - 1 is factor, that implies, X= 1(Since X - 1 = 0)

Substituting X = 1 in the equation, we have,

$= 2 {x}^{2} + kx$

$= 2 {(1)}^{2} + k(1)$

$= 2 + k$

Now, WKT, 2 + K = 0.

Therefore,

$k = - 2$

Hope it helps you!