Question

Find the value of K for which x= -2 is a root of quadratic equation kx2 + x - 6= 0
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Answer 1

Answer:

k=2

Step-by-step explanation:

Given that,

x=-2

so,

kx^2+x-6=0

we should substitute -2 in the place of of x

k(-2)^2+(-2)-6=0

4k-2-6=0

4k-8=0

4k=8

k=8/4

k=2