Question

Please help, I'd appreciate it. Given the function f(x)= x^4-x^3-2x^2, on which intervals is f(x) ≥ 0?

Answer 1

f(x) ≥ 0 iff x^4-x^3-2x^2≥ 0 iff x^2(x^2-x-2)≥ 0

Answer 2

iffx^2(x-2)(x+1)≥ 0 now we have to find the intervals

Answer 3

@xavfreakinrican

Answer 4

sorry my computer was messing up. and thanks