Question

. For what value of k, -4 is a zero of the
polynomial xsquare -x-(2k + 2).
​

Answer 1

Step-by-step explanation:

for quadratic polynomial...

i) product of zero

alpha ×beta = c/a

-4 = -( 2k +2) /1

-4 = - 2k -2

-2 = -2k

k =1

hopefully helping you............

Answer 2

Step-by-step explanation:

-4 is the zero of the polynomial

16-(-4)-(2k+2)

16+4-2k-2

18-2k=0

-2k=-18

k=9