If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x^2-2x+12.5=0
a = 1; b = -2; c = +12.5;
Δ = b2-4ac
Δ = -22-4·1·12.5
Δ = -46
Delta is less than zero, so there is no solution for the equation
| −9−4x=5−2x | | (2x-6)-4(3x+2)=6-2(8x+1) | | 22+28−x=-30 | | 8x+22x=-31 | | ?+6x?=40 | | 5(3-2(1-4x))+8x=-1+6(8x+1) | | 60,000=2000(2^t) | | 1/4x-9=10 | | -0.5=(x-63.6)/2.5 | | 2+x=9-12 | | 90+9m=162 | | 17n-30=225 | | 1-7x=2x+19 | | 8(x-6)+6=7x-2 | | 7(x-8)+21=7x-34 | | 6(x-2)+10=6x-2 | | 9x+3-2(3x-1+2x)=4(5x+1) | | 7x-5=5x=17 | | 7(2x-3)=6x-5 | | 4c^2+12c=0 | | 5-4(3-2x)-(5x+6)=3x+2 | | 3/4(4x+4)=12 | | -5(2x-5)=2(x-6)-11 | | 2x+(2x-2)=10 | | (x-10)+(x+40)+x=360 | | 4y^2-6y+15=0 | | 4c^2+14c=0 | | x/5+13=37 | | 2(b+18)=76 | | 9x-3=8-5x | | 16+4x=3(-x+2)-18 | | 60=2(s-38) |