How do you factor 20x^3-125x=0?

1 Answer
Tony B
Aug 2, 2016

5x(2x-5)(2x+5)

Explanation:

Factor out as much as you can from both

5x(4x^2-25)

,........................................................
Consider the example
a^2-b^2 = (a-b)(a+b)
,..........................................................
Applying the method in the example

Write as: " "5x[ (2x)^2-5^2] giving:

5x(2x-5)(2x+5)

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