Question 190388
4x^2y+20xy-92y
4y(x^2+5x-23)
Using the quadratic equation{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 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.