If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X^2-10X+30=0
a = 1; b = -10; c = +30;
Δ = b2-4ac
Δ = -102-4·1·30
Δ = -20
Delta is less than zero, so there is no solution for the equation
| 3x-2x-2=15-3x | | 1/5(3x-4)+1/6(3x+1)=7/15 | | 300=5s-(100+2s) | | 3(2x-3)=5(7x-2) | | 7(x+2)=84 | | 7n+2n=84 | | 3n+2=42 | | x+48=3x | | 7+4=10x-20 | | 7x+2x=84 | | 1000=0,4x | | 4÷(10-3y)+(3÷y)=5 | | a÷4+4=10 | | 2(x-3)+2=7 | | 9h^2+60h+100=0 | | 9x+7x-2x-5=79 | | x/3x+4=x+3/3x+19 | | -5-2x=-1-7x | | 2y^2+27y+13=0 | | 5/3-2x/3+8=-5x/2 | | 8x+12=3x+37x | | (3x-2)-3x=6 | | 2x3=3 | | 6x+10=x+3(3+x) | | 2y+7=y9 | | -20+21=m-10 | | 3x+2x+(x-5)=91 | | v=(4/3)(3.14)(5) | | v=(4/3)(3.14)(5)^3 | | 3z-2=10;-4 | | 14v=32+6v | | 100-x=40-4x |