Factor 12x-3x^3

Math
12x-3×3
Factor 3x out of 12x-3×3.
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Factor 3x out of 12x.
3x(4)-3×3
Factor 3x out of -3×3.
3x(4)+3x(-x2)
Factor 3x out of 3x(4)+3x(-x2).
3x(4-x2)
3x(4-x2)
Rewrite 4 as 22.
3x(22-x2)
Factor.
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Since both terms are perfect squares, factor using the difference of squares formula, a2-b2=(a+b)(a-b) where a=2 and b=x.
3x((2+x)(2-x))
Remove unnecessary parentheses.
3x(2+x)(2-x)
3x(2+x)(2-x)
Factor 12x-3x^3

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