If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x^2+2.1x+2=0
a = 1; b = 2.1; c = +2;
Δ = b2-4ac
Δ = 2.12-4·1·2
Δ = -3.59
Delta is less than zero, so there is no solution for the equation
| 1-(x-2/15)-(x-1/3)=(x+4/5)-(x-5/30) | | x^2+4x+4.1=0 | | (2x+3)/x=28/8 | | 7(3s+3)=189 | | 4n-9=10+2n | | H(t)=-16t^2+176t+0 | | 4.5x=454.5 | | x^2+4x+2.1=0 | | 13x-3=5x-27 | | -15+3z-z=-1 | | 1/2y-3/5=-1/7 | | (u-4)X10=30 | | 4x+7/x=0 | | 3h-7=3+2h | | 5+5w=-20 | | 4x+7/x=3;0 | | -15+3z-z=1 | | 5(6y-20=20 | | 2t+1=7-t | | x-2x^-2=-1/5x-4/5 | | (5.23x+3.76)−=(3.67x−6.39) | | (x-5)*(4-2x)*(3x-1)=0 | | (x-35)+x+(-46)+1/2x=360 | | (x-5)(4-2x)(3x-1)=0 | | z+7/10=9 | | x*16.50=50000 | | 3x+31=85 | | 5^4x=73 | | 1/5x+12=2/5x-2 | | 19-3x=2x+4 | | m-3=3.6 | | 5^x+2=6 |