Question

if -4 is a root of the quadratic polynomial 2x²+px-2 then the value of p is​

Answer 1

Answer:

7.5

Step-by-step explanation:

if -4 is the root of the equation

by putting -4 as x in the equation should give 0

2(-4)^2 + p(-4) - 2 =0

32-4p-2=0

4p=30

p=7.5