Example

Factoring 5y315y2270y5y^3 - 15y^2 - 270y

To factor the polynomial 5y315y2270y5y^3 - 15y^2 - 270y completely, first extract the greatest common factor (GCF). The GCF is 5y5y. Factoring it out leaves 5y(y23y54)5y(y^2 - 3y - 54). Next, factor the trinomial y23y54y^2 - 3y - 54 by finding two numbers that multiply to 54-54 and add to 3-3. Those numbers are 9-9 and 66. Writing the expression with these factors gives the completely factored form: 5y(y9)(y+6)5y(y - 9)(y + 6). Check the result by multiplying the factors to ensure they return the original polynomial.

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Updated 2026-04-30

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