Question

Anyone plz solve it..10 standard​

Answer 1

Step-by-step explanation:

Given ------ x = -2

$2 {x}^{2} + 3kx = 9$

$2 {( - 2)}^{2} + 3( - 2)k = 9$

$8 - 6k = 9$

$6k = - 1$

$k = \frac{ - 1}{6}$

Therefore, it is your answer.

I hope it helps you. If you have any doubts, then don't hesitate to ask.

Answer 2

Put x=2 we get
2(-2)^2+3k(-2)=9
-6k=1
K=-1/6