2 x - 9/25
x^2 - 1*9/25
1*(x + 3/5)*(x - 3/5)
(1*(x + 3/5))*(x - 3/5)
-0.36 + x^2
2 -9 + 25*x ---------- 25
(-9 + 25*x^2)/25
(-3 + 5*x)*(3 + 5*x) -------------------- 25
(-3 + 5*x)*(3 + 5*x)/25