Question

For what value of k is the polynomial f(x) =2xsquare -kxsquare+5x+9exactly Divisible by (x+2)? Pls tell urgent

Answer 1

Answer:

see in below pic

Step-by-step explanation:

Answer 2

Answer:

k=4/7

Step-by-step explanation:

Since $(x+2)$ is exactly divisible by $f(x)=2x^2-kx^2+5x+9$

Therefore $f(-2)=0$ (According to Factor Theorem)

$2(-2)^2-k(-2)^2+5(-2)+9=0$

$2*4-k*4-10+9=0$

$8-4k-1=0$

$7-4k=0$

$-4k=-7$

$k=-7/-4$

$k=7/4$

Hence the value of k is 7/4

Hope it helps you!