Question 1086133
5x^2 + 4 = 3x + 9 -> 5x^2 - 3x - 5 = 0
Using the quadratic formula, there are two solutions:
x = (3 +- sqrt(109))/10
(10x - 3)^2 reduces to (+-sqrt(109))^2, which equals 109
Ans: 109