SOLUTION: factors of -15=-8x2+2x

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Question 1039204: factors of -15=-8x2+2x
Found 3 solutions by josgarithmetic, ikleyn, MathTherapy:
Answer by josgarithmetic(39627)   (Show Source): You can put this solution on YOUR website!




Trying combinations and checking each might be a way, but easier maybe to use general solution formula for quadratic equation.
Discriminant,








Answer by ikleyn(52864)   (Show Source): You can put this solution on YOUR website!
.
factors of -15=-8x2+2x
~~~~~~~~~~~~~~~~~~~~~~~ 

 = ,

 = ,

 =  =  = .

 =  = ,   =  = .


Factorization:   =  = (2x-3)*(4x+5).


Answer by MathTherapy(10556)   (Show Source): You can put this solution on YOUR website!

factors of -15=-8x2+2x




 ------- Replacing - 2x with - 12x + 10x



 

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