Question

what is the value of k in the polynomial X square + 8 x + K if -1 is the Zero of the polynomial​

Answer 1

Answer:

keeping -1 on the x position

x square + 8x +k=0

1-8+k=0

-7+k=0

k=7

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Answer 2

Answer:

k=7

Step-by-step explanation:

we know that -1 is a zero of a polynomial p(x)=2x^2 + 8x +k

so by putting x=-1 we get ,

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

= 1-8+k

= -7+k (or) k-7

we know that x=-1 is a zero of polynomial p(-1)

so,

p(x) = 0

p(-1)=0

k-7. =0

k. =7