Question

If x = -2 is a solution of the equation x2 + px + 8 = 0. Find the value of p

6
8
4

Answer 1

Answer:

p= 6

Step-by-step explanation:

since x= -2

f(x)=x²+px+8=0

f(-2)=(-2)²+p(-2)+8=0

=4-2p+8=0

=(-2p)+12=0

=(-2p)=0-12

= -2p= -12

= -p= -12/2

→p= 6.

hope this helps