x2+5x+21=0

Simple and best practice solution for x2+5x+21=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for x2+5x+21=0 equation: 



x2+5x+21=0

We add all the numbers together, and all the variables

x^2+5x+21=0

a = 1; b = 5; c = +21;
Δ = b2-4ac
Δ = 52-4·1·21
Δ = -59
Delta is less than zero, so there is no solution for the equation

See similar equations:

| 6x^2+6x-12=24 | | 50=5(x# | | 4z/7+9=2 | | 8+11p=63 | | 4−5x=12−7x | | 2a=81 | | 360-31x/120+x=2 | | X/5+x=180+27-15 | | 0,13x-5=21 | | 7t+11=81 | | 8h-1/2=7.5 | | 3x+0.5=0.6 | | x²-x-37=5 | | 6g+4=10 | | 7=9x=-29 | | 2k-11=2 | | x+4x+x-6=48 | | 13-x/12=7 | | d12=36 | | e+9=19 | | ?x7=98 | | 3e-6=0 | | 63=-9b | | x/9+9=3 | | 2q+10=14 | | 7d=15+5d | | -2x+5=-3x+12 | | 4k-6-3k=-15 | | 3(2x-5)=5(3+x)5x | | -3x+19=x-13 | | 4k+-6=3k+k+1 | | 8x-(5-4x)=6-2(4x+9) |

Equations solver categories