X^2+9x-91=0

Simple and best practice solution for X^2+9x-91=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 X^2+9x-91=0 equation: 



X^2+9X-91=0

a = 1; b = 9; c = -91;
Δ = b2-4ac
Δ = 92-4·1·(-91)
Δ = 445
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{445}}{2*1}=\frac{-9-\sqrt{445}}{2}
$


$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(9)+\sqrt{445}}{2*1}=\frac{-9+\sqrt{445}}{2}
$

See similar equations:

| n/20-8=-7 | | 4x-10+108=180 | | g+142/26=10 | | g+142/26= 10 | | 1/2p-5=11 | | 14=m/6+11 | | 3c-8=22 | | 125m-75m+48000=51250-200m | | b/14-6=10 | | -5(x+-14)=-130 | | 18/7n+1=-9 | | m/7+9=11 | | 6y+18y=0 | | z-18=-10 | | 493-v=84 | | -68+5x=9x+36 | | 3p+18=21 | | j-6=2j=3 | | 51-t=11 | | 3p18=21 | | (5x+12)=(3x+8) | | d/3=-18 | | 3y-4y=7 | | 7.3x-3.2=11.4 | | 51–t=11 | | z+1.9=0.3 | | 9n+-3=36 | | 2.49(a+1.24)=11.17 | | z/5+41=45 | | -6(x+13)=-54 | | 2l+8=16 | | 2l​ +8=16 |

Equations solver categories