Question

solve this question​

Answer 1

Answer:

a = 6

Step-by-step explanation:

as x = -1/2 is a zero of p(x) , then

p(-1/2) = 8(-1/2)^3 - a(-1/2)^2 - (-1/2) + 2 = 0

= -1 - a/4 + 1/2 + 2 = 0

= 1/2 + 2 - 1 -a/4 = 0

= 3/2 - a/4 = 0

=> 3/2 - a/4 = 0

=> a/4 = 3/2

=> a = 6