Question

What is the value of k in the polynomial X^2 + 8 x + k if -1 is the zero of the polynomial

Answer 1

Answer: k=7

Step-by-step explanation: (refer to attached image)

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Answer 2

Hey MATE!!!

Since -1 is a solution of the given quadratic equation therefore repacing x as -1 will give us the final product as zero.

So we put value of x = -1

(-1)^2 + 8(-1) + k = 0

1 - 8 + k = 0

-7 + k = 0

k = 7 Answer

Hope it helps

HAKUNA MATATA :))