Question

5x^3+8x^2-7 find f(-3)​

Answer 1

-70

Explanation:

5×
`(-3)^(3)`+8×
`(-3)^(2)`-7 = -70

Answer 2

f(-3) = -70

Explanation:

5x^3+8x^2-7 find f(-3)​

f(x) = 5x^3+8x^2-7

f(-3) = 5(-3)^3+8(-3)^2-7

f(-3) = 5(-27)+8(9)-7

f(-3) = -135+72-7

f(-3) = -70