3x+x^2-39=0

Simple and best practice solution for 3x+x^2-39=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 3x+x^2-39=0 equation: 



3x+x^2-39=0

a = 1; b = 3; c = -39;
Δ = b2-4ac
Δ = 32-4·1·(-39)
Δ = 165
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{-(3)-\sqrt{165}}{2*1}=\frac{-3-\sqrt{165}}{2}
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+\sqrt{165}}{2*1}=\frac{-3+\sqrt{165}}{2}
$

See similar equations:

| 100=10(2x-12) | | 4^(2x+3)=17 | | -21=152x^2 | | 1/3x-1/2=18/1/2 | | 4^2x+3=17 | | 73/4+(-1/3)=x | | 2(x+5)-7=-(x-2)-16 | | 4^{2x+3}=17 | | .80d+3=6.75 | | 3=-0.3x^2+3.6x-6 | | z+17=3 | | c(-8)=-72 | | 53+4*x=21 | | 2x+23=6x-37 | | 3=-0.3x+3.6x-6 | | 5(5q+11)=-5(20q-11)-11q | | 4x-2x+x=38 | | -2(n-5)=-2 | | 14x-7=9-42 | | 5(5q+11)=-5(20q-11)-q | | 34x-9=1243 | | 18+3(x-5)=31-2(3x-4) | | –4q−–13q=–9 | | 2x+1/9+3x+2/45=-1 | | 4(y+2)=3y+5 | | 2/3=1/4k= | | 6y+4+3y=-5+y+17 | | -3x-15=42 | | 4x+14=126 | | 2(-f-4)-4f=16 | | q−43/5=72/3 | | 0=5r-2r |

Equations solver categories