SOLUTION: x^3-4x <= 0

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Question 105114This question is from textbook
: x^3-4x <= 0 This question is from textbook

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E3-4x+%3C=+0 notice that x is common to both terms, and we can write:
x%28x%5E2+-+4%29+%3C=+0 here we can factor x%5E2+-+4 and write it as:
= > x%5E2+-+2%5E2
= > %28x-2%29%28x%2B2%29
and we will have:
x%28x-2%29%28x%2B2%29+%3C=+0