Question 306539
6(6x+9)=x(5x)
36x+54=5x^2
5x^2-36x-54=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
x=(36+-sqrt[-36^2-4*5*-54])/2*5
x=(36+-sqrt[1,296+1.080])/10
x=(36+-sqrt2,376)/10
x=(36+-48.74)/10
x=(36+48.74)/10
x=84.74/10
x=8.474 ans.
x=(36-48.74)/10
x=-12.74/10
x=-1.274 ans.