If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(90/6)*x^2-12*x^2+6*x-54 = 0
3*x^2+6*x-54 = 0
DELTA = 6^2-(-54*3*4)
DELTA = 684
DELTA > 0
x = (684^(1/2)-6)/(2*3) or x = (-684^(1/2)-6)/(2*3)
x = (6*19^(1/2)-6)/6 or x = (-6*19^(1/2)-6)/6
x in { (-6*19^(1/2)-6)/6, (6*19^(1/2)-6)/6 }
| 5x^2-50x+125=25 | | 5z=-3(z+3) | | -51-1x=-5+29 | | 0.4x+9.1=6.9 | | i(2x-4y)=4x+2+3yi | | 2.64/1/2 | | W+5=-7+138 | | 9x-9=-2+10+12 | | 50x-50=-5(-4x+4) | | 2x=1(x+3.4) | | -11=5+n/12 | | -42+3x=-1x+22 | | -2=3y-16-5y | | 4/(x-2)=2/3 | | (2-p)-2= | | 6-(7x-7)=7(4-x) | | 12+6(2-2)=5z+3 | | 2y-400=42 | | W+5=-7w+134 | | 0.5(4x+10)=5-3x | | 3w+9=63 | | (x+3)/2+(x-1)=4/5 | | x-6=4(2x-5) | | 15p^2+31p=-10 | | 3u-12-6=30u-20-9u | | -6n+8=-2n-16 | | 10n+1=-1 | | 2700=30x+5 | | y=-7(2)-1 | | -5y+5=-6y+1 | | 6b-24=6b-24 | | 2y-30=180 |