Question

If one root of the quadratic equation
${2x}^{2} + kx - 2 = 0$
x = -2, find the value of k





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Answer 1

Answer:

answer is -1/16

Step-by-step explanation:

put value of x in the equation

2x^2+kx-2=0

{2×(-2)}^2+(-2)k-2=0

{-4)^2-2k=2

16-2k=2

-2k=2/16

k=1/8×(-2)

k=-1/16

hope it helps u

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