Question

help ans this question​

Answer 1

Step-by-step explanation:

p(-1)=(-1)²+8(-1)+k=0

=k=7

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Answer 2

Let p(x) = x^2 + 8x + k

Since, -1 is the zero of the given polynomial. Hence, p(-1) = 0

=> p(-1) = 0

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

1 - 8 + k = 0

k - 7 = 0

k = 7

Hence, the value of k for which -1 is the root of the given polynomial is: k = 7.