If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2x^2+4x+8=0
a = 2; b = 4; c = +8;
Δ = b2-4ac
Δ = 42-4·2·8
Δ = -48
Delta is less than zero, so there is no solution for the equation
| 3(1+n)-7=17 | | |x-3|=|2-x| | | -7s=-34 | | -27+6k=-3(-6-7k) | | 5xX5=25 | | 24-4n=-2n-(-6n+8) | | 2(x+2)-8(x+6)=-3 | | N*(n+1)=420 | | -5x+7-7x=-13+8x | | 9-y/2=1 | | 49=-66+9+2b | | 5x+2=4−7 | | 3x+7=556-6x | | n+3+7n=-1+7n | | -2a+11+3a+9=11 | | 3·(x−6)=2·(x−7) | | 8-5r=-16+6r-8r | | 5x+9=8x−4 | | 34/x=6/3 | | 5x=98−9 | | -n+5=11 | | 32=8(p+5) | | x^2-9/5x+4=x^2-9/4x+5 | | 3x/5=-7/8 | | -x+5+86x=1+5x+3 | | 3,2x=64 | | 2-8n=n+4-2 | | (x+5)(x-2)=78 | | 0,2x+x=7500 | | X-7=-3+3x+8-4x | | 2.2x-5=2(1.4x3) | | 1n=7 |