Question

If-1 is the zero of the polynomial x^2 + 8x + k then the value of k is
a) 6
b) 3
c)2
d) 5​

Answer 1

Step-by-step explanation:

if -1 is zero of the polynomial

x=-1

(-1)²+8(-1)+k =0

1-8+k=0

-7+k=0

k=7

Answer 2

The options are given wrong

Check if the question sent is correct or not.

Step-by-step explanation:

As -1 is the zero of this polynomial,

f(-1) = (-1)² + 8 × -1 + k = 0

=> 1 -8 + k = 0

=> k = 7