SOLUTION: 4x^2y+20xy-92y says to factor?

Question 190388: 4x^2y+20xy-92y
says to factor?
Answer by checkley75(3666) (Show Source): You can put this solution on YOUR website!
4x^2y+20xy-92y
4y(x^2+5x-23)
Using the quadratic equation we get:
x=(-5+-sqrt[5^2-4*1*-23])/2*1
x=(-5+-sqrt[25+92])2
x=(-5+-sqrt117)/2
x=(-5+-10.82)/2
x=(-5+10.82)/2
x=5.82/2
x=2.9
x=(-5-10.82)/2
x=-15.82/2
x=-7.91
4y(x+7.91)(x-2.9) ans.
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