Answer
$x^3-36x=x(x-6)(x+6)$
Work Step by Step
Factor out the GCF $x$ to get
$x(x^2-36)$.
Factor the difference of two squares:
$x(x-6)(x+6)$.
Check by multiplying the factors:
$=x(x^2+6x-6x-36)
\\=x(x^2-36)
\\=x^3-36x$.
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