If -1 is the zero of the polynomial x²+8x+k then the value of k is
(a) -7
(b) 7
(c) -9
(d) 9
​

1 thought on “If -1 is the zero of the polynomial x²+8x+k then the value of k is<br />(a) -7<br />(b) 7<br />(c) -9<br />(d) 9<br />​”

1. Answer:

   7

   Step-by-step explanation:

   while substituting -1 to the equation

   (-1)² + 8(-1) + k = 0

   1 – 8 + k = 0

   -7 + k = 0

   k = 7

   Hopefully

   Brainliest

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