If it's not what You are looking for type in the equation solver your own equation and let us solve it.
6u^2-21u=0
a = 6; b = -21; c = 0;
Δ = b2-4ac
Δ = -212-4·6·0
Δ = 441
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{441}=21$$u_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-21)-21}{2*6}=\frac{0}{12} =0 $$u_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-21)+21}{2*6}=\frac{42}{12} =3+1/2 $
| 4(x−8)+14=4x−17 | | −9(3−4w)−8w=28w−27 | | 3n^2=90-3n | | (2x-1)(x+4)=2x+7x-4 | | 5x-14=42 | | 3x+2+4(x-1)=8x+17 | | 35y=175 | | -53=-8x-5 | | x=5*3+11 | | 2(x−4)+6=2x−2 | | (x-5)=x+25 | | -5=b/5-3 | | 3x+18=5x-80 | | 4(3y-8)-5y=7(y-7)-4 | | 2k-7-2k=-14 | | 28x+24=28x+24 | | 2(x+9-15=-3 | | 1/4y+2=3y | | 3d+8=8d+12 | | 2(x+6)=-16 | | -3+8z=-5 | | 50+10x=-190 | | 18-3z/2=-z | | 13x-66=51 | | 110=10(x-60)+60 | | 5x+2+6x+4+12x+-4=180 | | 5x-3/5=6x+1/5 | | 54-6x=144 | | 3/x-1+2/5x5=-3/x²-1 | | 2x+7(2x-7)=-177 | | 18-6x=-42 | | 22.50c=90 |