SOLUTION: i didnt know which topic to put it under so i put it under this topic....my question is Factor 20y^3+5y^2-15y ... i dont get it AT ALL! :/

Question 335377: i didnt know which topic to put it under so i put it under this topic....my question is Factor 20y^3+5y^2-15y ... i dont get it AT ALL! :/
Found 2 solutions by stanbon, benazir.sj@gmail.com:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Factor 20y^3+5y^2-15y
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Look at the number coefficients: 20,5,-15
The largest common factor for these is 5.
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Look at the powers of y: y^3, y^2, y
The largest common factor for these is y.
----------------------
So the common factor is 5y
---------------------------------
Factor Form:
= 5y(4y^2+y-3)
= 5y(4y^2+4y-3y-3)
= 5y(4y(y+1)-3(y+1))
= 5y(y+1)(4y-3)
===================
Cheers,
Stan H.
===========

Answer by benazir.sj@gmail.com(109) (Show Source): You can put this solution on YOUR website!
20y^3+5y^2-15y
solution :
20y^3 +5y^2-15y
here 5y is common
so the equation becomes
5y(4y^2+y-3)
now you have to factor
4y^2+y-3 =4y^2+4y-3y-3
4y(y+1)-3(y+1)
(4y-3)(y+1)
20y^3 +5y^2-15y =5y(4y-3)(y+1)
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