x2+9x-5=0

Simple and best practice solution for x2+9x-5=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+9x-5=0 equation:



x2+9x-5=0
We add all the numbers together, and all the variables
x^2+9x-5=0
a = 1; b = 9; c = -5;
Δ = b2-4ac
Δ = 92-4·1·(-5)
Δ = 101
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(9)-\sqrt{101}}{2*1}=\frac{-9-\sqrt{101}}{2} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(9)+\sqrt{101}}{2*1}=\frac{-9+\sqrt{101}}{2} $

See similar equations:

| 90=144-62+x | | X-228=-9x+112 | | 2(t+3)=14 | | -4X-11=4x-1+2x | | 2(a+7)-8=16 | | -14+6=3(x-2) | | -165.832=-10.91k* | | 62+x=144 | | 4y=4=-1 | | Y=1.1x+3 | | 56=-2(-3x-4) | | x+(x*0.15)=437 | | x+10/x-7=8/9 | | 180=144-62-x | | 50+x=62 | | 3(5-2v)=25 | | 9y+3y-11y=7 | | 3+6(x-2)=15+6x | | 3(0.6+15b+4)=7​6.8 | | 5(7-x)=12-(-8) | | (8x+8)(9x+1)=180 | | 9-2(a+3)=23 | | 4x2-3=-103 | | -15=5w+7-3w | | 18j-16j-2j+3j=6 | | 9-2(a+3=23 | | 4f-2=22-8f | | y/9=-55 | | x-9=7/8+3.14+1 | | y=0.2+0.3 | | 1445+x=1500 | | 10h-4h-6h+2h+2h=12 |

Equations solver categories