If it's not what You are looking for type in the equation solver your own equation and let us solve it.
9x^2+11x-66=0
a = 9; b = 11; c = -66;
Δ = b2-4ac
Δ = 112-4·9·(-66)
Δ = 2497
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(11)-\sqrt{2497}}{2*9}=\frac{-11-\sqrt{2497}}{18} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(11)+\sqrt{2497}}{2*9}=\frac{-11+\sqrt{2497}}{18} $
| 9(x-4)/3=3(x+8)/13 | | 13-8h=-2-7h | | b-6=-4b-18+11b | | -2(5x+8)=-5(4x+1) | | -5(6x-4)+4=-30x+24 | | 2(x-4)/7=-10 | | 10v-10=10+11v-11v | | (-11/6)+1m=(-2/9) | | -3/4x6=1/2x1 | | -(2v-2)=-6(v+8)-v | | X^2+1.5x-612=0 | | 5m/4=20 | | 293=-3+8(5b+7) | | 4–x12=–4–x12 | | 49x+9=49x+83= | | 13=4x=-19 | | -19.1n=-20n-9.09 | | (37b-9)-9(4b+4)=-7 | | 2x-5.42=-3.86 | | x=7,5x-9=26 | | 4+4b=217 | | 5w-20=20+8w-10 | | -229÷168-9÷7x=5÷8x-2 | | T=-2t+6 | | -12-15m=-18m-3 | | 2+12q=-6q-5+17q | | 1+3x-1=-9 | | 1.8x=-8.4 | | -8q+10=-10q-10 | | 4x+6x+11×-6=180 | | 1-k+2=0 | | 2(2x+4)=7x+6-3x+2 |