If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4u^2-85u+441=0
a = 4; b = -85; c = +441;
Δ = b2-4ac
Δ = -852-4·4·441
Δ = 169
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$u_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$u_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{169}=13$$u_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-85)-13}{2*4}=\frac{72}{8} =9 $$u_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-85)+13}{2*4}=\frac{98}{8} =12+1/4 $
| 180=9a+a+39+a+20 | | 180=x+22+x-22+x-3 | | X/5x-1=3/16 | | 23+3y=-11y-9 | | X=-6+15y | | 180=80+z-4+z-16 | | (2x-5)/2=(3x-1)/4 | | 29=a-17 | | 180=100+5v+3v | | (X+2)+(x+2)+(x+2)=18 | | 3w/8=21 | | 180=67+3s+38 | | 20x-14=11x+4 | | 180=30+3s+2s | | 15/8=3y | | -3w+36=3(w-8) | | 29.2=36.2-b | | 180=52+2b+2b | | -2(y-8)=3y-24 | | 8(x-3)=14(x+5) | | 8(y-3)=14(y+5) | | 3u+33=9(u+3) | | 5x-4(3x+3)=9 | | 4(w-7)+2w=2 | | 80x-20x^2=0 | | x-2(x+1)=-1 | | -4x-8=-9x-1 | | 2(y-2)-5y=11 | | 5(x-12)=x+4 | | v-17+v-19+v-24=180 | | 1800=8.34*x*7500000 | | 1750=1/2a*100 |