Question

(2x+1) is a factor of 8x^3-ax^2-x+2. find a

Answer 1

Answer:

Step-by-step explanation:

2x + 1 factor of

p(x) = 8x^3 - ax^2 - x + 2

means that

p(- 1/2) = 0

that is

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

that is

- 4 - a + 2 + 8 = 0

that is

a = 6