If it's not what You are looking for type in the equation solver your own equation and let us solve it.
0.1725x^2-0.21x+0.9=0
a = 0.1725; b = -0.21; c = +0.9;
Δ = b2-4ac
Δ = -0.212-4·0.1725·0.9
Δ = -0.5769
Delta is less than zero, so there is no solution for the equation
| x-12=2x-32 | | 2(x+5)+25=140 | | 32=17=x | | -36=x(-16) | | 2-2a=-8 | | 9=0.3d | | 4n+5=95 | | 10-3x=-5x+6 | | 3+5-x=-x=-7 | | 100=6c+4c | | 6c+4c=100 | | 45=x-20= | | 10÷x=4÷7 | | 9m=81,m=3,9,-3 | | m=3,9,-3 | | -9x5=32 | | 28-y-y=7 | | Y+10+y=44 | | 4b+7=41 | | 2u+2u-16=-16 | | 11n-n^2=24 | | 2x+6+6x+-22=90 | | 18.2=y-11=y | | 25/5÷x=50 | | 3/5x+2/3x=23 | | 10+y=44+y | | 3(z-2)+6=5(z4 | | 5x-7=8x+9 | | -4=k+3.5 | | 5y^2-13=0 | | 10+y.y=44 | | 16-5n=1 |