If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x(x-3)=-720
We move all terms to the left:
x(x-3)-(-720)=0
We add all the numbers together, and all the variables
x(x-3)+720=0
We multiply parentheses
x^2-3x+720=0
a = 1; b = -3; c = +720;
Δ = b2-4ac
Δ = -32-4·1·720
Δ = -2871
Delta is less than zero, so there is no solution for the equation
| 11x-4x+112=11x+64 | | 1/4x=x-18 | | 7=b+20b | | w/5-w+3/w=-3/w | | 0.9z=4.5 | | 1.67g=10.02 | | h3=3 | | 5x+7x-84=105-9x | | q^2+9q+5=0 | | 3x=-174 | | (w/5)-(w+3/w)=(-3/w) | | 4=k9 | | 1.86=6.2d | | 0.4z=2 | | 3(s-6)-2=4 | | 3/4=x-8 | | 150m-75m+48750=51000-175m | | 150m+75m+48750=51000-175 | | -2(t-2)=-8 | | 9n—8=6n+7 | | 15-x=2x-1 | | 3/4x=x-7 | | -3(s-14)+18=12 | | x-8=5(x-2) | | 7-(2y-5)=4-3y | | 2x+3=-x+24 | | 3(t+1)-7=8 | | x²+18x=4x-49 | | 7x-30=5x+6=180 | | 48x=71 | | -15(6^3x)=-25-2(6^6x) | | 2(z+3)+8=18 |