If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x^2-9x+189=0
a = 1; b = -9; c = +189;
Δ = b2-4ac
Δ = -92-4·1·189
Δ = -675
Delta is less than zero, so there is no solution for the equation
| b-4(2b+5)=29 | | 4*3x=13 | | 108/x=x-3 | | 4y-13=7y= | | z/8-2=4z= | | 35-2x=2x-1 | | 9x-12=-4 | | 5x+5=-30x= | | 3y+12×=9×+21 | | 98=38-10z | | x+(x(.05))=3500 | | 5(3p-4)=72 | | 3x/10-1=-2x= | | 5(2t+7=69 | | 2(3d+3)=d-19 | | 3(4x-32)=4x+8 | | 3/3(x-8)=1/2(2x+4) | | 3(8-3x)=4+x | | 5+(4-2x)=3 | | 4x-(17+2x)=19 | | 7c+10=24 | | 6^{2x}+6^{x+1}-91=0 | | -14=5p-4 | | 34=3j+4 | | 8z+1=-71 | | 5(4n+3)-3(2n-7)-20=8 | | -3(v-6)=2v-2 | | 4/d=9 | | -8.8x=52.8 | | 4/d=9 | | 44-4(8x-26)=-3(6x+16) | | 6(z+1)=5(z-4)+z |