Question

If x = -1/2
Find
2x^3+4x^2+x+2

Answer 1

Answer:

(2/3)^2

Step-by-step explanation:

2x^3 + 4x^2 + x + 2

2(-1/2)^3 + 4(-1/2)^2 + (-1/2) + 2

2(-1/8) + 4(1/4) +(-1/2) + 2

-1/4 + 1 -1/2 + 2

(-1 + 4 - 2 + 8)/4

9/4 = (2/3)^2