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Factor 5x3+ 30x2-15x
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3 votes
Factor
5x3+ 30x2-15x

User Ramast
by
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1 Answer

5 votes

5x³ + 30x² + 15x

Take out a common factor of 5x : 5x (x² + 6x + 3)

The factors of the quadratic portion are [ x - (-3 + √6) ] and [ x - (-3 - √6) ].

So finally, we wind up with:

5x (x + 3 - √6) (x + 3 + √6) .


User Oscar Hierro
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