If it's not what You are looking for type in the equation solver your own equation and let us solve it.
75+54x+9x^2=0
a = 9; b = 54; c = +75;
Δ = b2-4ac
Δ = 542-4·9·75
Δ = 216
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{216}=\sqrt{36*6}=\sqrt{36}*\sqrt{6}=6\sqrt{6}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(54)-6\sqrt{6}}{2*9}=\frac{-54-6\sqrt{6}}{18} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(54)+6\sqrt{6}}{2*9}=\frac{-54+6\sqrt{6}}{18} $
| 2(x-9)-15=11x-56 | | 2-1/y-2=y-3/y-2 | | -7a+2=-12 | | 8(6x-11)=-4(-x+11) | | 4.6=x/2.5+3.2 | | 3n+22=2n+32 | | x/2-4-6=10 | | 7=7k=2k-8 | | -84=3r+6(r-8) | | u/4+15=21 | | 20x-16=56 | | 4w-(3w-24=0 | | 29=x/2-14 | | 7(x+6)=6x+12 | | 4(w-6)=3(w=1 | | 102=2(w+6)+2(w) | | 4p-6=7p+9-2p | | ?46x?=??22 | | 11=12-3x | | 2m^+8=0 | | −10(t+1)3+10=100 | | 0.75(8x)=8x-20 | | 12a^+15a=0 | | 4w-10=-3(w+8) | | 5n+9(6-2n)=0 | | -3x^+5=0 | | 4+x/x=-1 | | 9y^-16=0 | | 2(3z+2)=-32 | | -2(b+6)=-5(b+3) | | 3y+4=2(-y-3) | | 1/x=3.8 |