If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5x^2+8x=-4
We move all terms to the left:
5x^2+8x-(-4)=0
We add all the numbers together, and all the variables
5x^2+8x+4=0
a = 5; b = 8; c = +4;
Δ = b2-4ac
Δ = 82-4·5·4
Δ = -16
Delta is less than zero, so there is no solution for the equation
| 7-3a+11+5a=-20 | | n/15=4/32 | | x-3+5x=42 | | 42=4d+61/2 | | -2(x+10)=4 | | 5(x-1)+6(x-2)=3 | | 10=4/3x-2 | | 2y=52.2 | | -21-n=4(7n+2) | | 3(x+2)-(x-3)=x-5-3(x+1)+4 | | 1/5x+12=x-107 | | 5h+2-h=225h+2-h=22 | | 2x+234+15x+32=180 | | x-35=-64 | | −2x=5 | | 58=-8m+18 | | 1X+10=-3x+2 | | -2x+x+9=6 | | 39x=1209 | | 2-(6-10n)=10(2n-6) | | -9=4a-1+4a | | -2a-1=19 | | N^2-64=n^2-8^2 | | 3x+x=52.2 | | 5x-5=38 | | --3x-10=32 | | -30=-9+n | | 3x+49=1980 | | 7-5(x+3)=-8 | | –5x=20 | | 2x+4–1=33 | | 17y+5=-12 |