Question

if -2 is zero of the polynomial3x^2-kx +2 then value of k is
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Answer 1

Answer:

k = -7

Step-by-step explanation:

f(x) = 3x^2 - kx + 2 = 0

f(-2) = 3(-2)^2 - k(-2) + 2 = 0

3(4) + 2k + 2 = 0

12 + 2k + 2 = 0

14 + 2k = 0

2k = -14

k = -14/2

k = -7

Hope it helps you!!!