Question

If-2 is a zero of polynomial x²+x-k then find the value of K​

Answer 1

Answer:

x=-2

p(x)= x^2+x-k=0

p(-2)=2^2+2-k=0

4+2-k=0

6-k=0

-k=-6

therefore, k=6

Answer 2

Answer:

k=6

Step-by-step explanation:

x2+x-k

2 is zero of above polynomial so,putting the value of x we get as,

4+2-k=0

6-k=0

k=6