SOLUTION: what is the factor of 10y^3+5y^2-15y I just can't get this one

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Question 405513: what is the factor of 10y^3+5y^2-15y
I just can't get this one

Answer by Tatiana_Stebko(1539)   (Show Source): You can put this solution on YOUR website!

Use method , when , - are the roots of the quadratic equations




or
or

.

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