If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-260=-x^2+7x
We move all terms to the left:
-260-(-x^2+7x)=0
We get rid of parentheses
x^2-7x-260=0
a = 1; b = -7; c = -260;
Δ = b2-4ac
Δ = -72-4·1·(-260)
Δ = 1089
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{1089}=33$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-7)-33}{2*1}=\frac{-26}{2} =-13 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+33}{2*1}=\frac{40}{2} =20 $
| 0.4-0.8(x-4)=1.3x-1.9 | | 29=x/7-19 | | -6u+4(u-3)=6 | | 3(3x+2)=7-(x-9) | | -5b-10=b+8 | | -52=-4(3k+4) | | 3y-5=4+2y | | 85=5w+10 | | 6=w/3-15 | | -5x+2=-2x+16+16+4x | | v/5=-37 | | -3=8/p-4 | | 8x-23=7x | | -2(b+3)=-18+4b | | 4g+3.97=20.85 | | 171=x^2-28X | | 2(1-6x)=86 | | 4x-1=9x-9 | | 7(2x-3)+6=-1-2(6x-20) | | 2(-6x)=86 | | 171=x2-28x | | 3+2x^2-4x=^3 | | n+.5=-3.24 | | n+.5=3.24 | | -2(-2x+2)+4(-4x+4)=-28 | | 29–5v=5–6(6v–4) | | -2p-3=24-7 | | -1+3n=2n+2+2n | | 14–6x=-4(2x–2) | | x+8=3x-x | | x+2.5x-9+1.5x=99 | | x+x+2.5x-9+1.5x=99 |