Question

the value of k for which -4 is a zero of the polynomial x^2-x-(2k+2) is options are
a)3 b)9 c)6 d)-1​

Answer 1

hope this helps u

answer option B

x= -4

p(x)=x²-x-(2k+2)

p(-4) = [-4]²-[-4]-[2k+2]

0=16+4-2k-2

0=20-2k-2

0=18-2k

-18=-2k

k=-18/-2

minus /minus=plus

k=9