Question 415045
(9x-6)^2= (6x)^2+60^2
81x^2-108x+36=36x^2+3600
45x^2-108x-3564=0
9
5x^2-12x-396=0

Find the roots of the equation by quadratic formula

a= 5  , b =-12   , c =-396    .

b^2-4ac=8064

{{{x=(-b+-sqrt(b^2-4ac))/(2a)}}}


{{{x1=(12+sqrt(8064))/(10)}}}
x1= 10.18
...
{{{x2=(12-sqrt(8064))/(10)}}}
x2=-7.78