Question

if 2 is a root of the equation x2+kx+12=0 then the value of k is​

Answer 1

Answer:

k = - 8

Step-by-step explanation:

as 2 is root (zero) of polynomial .

Hence , 2² + 2k + 12 = 0

4 + 2k + 12 = 0

2k + 16 = 0

2k = -16

k = -16/2 = -8

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