3x2-9x-8=0

Simple and best practice solution for 3x2-9x-8=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 3x2-9x-8=0 equation: 



3x^2-9x-8=0

a = 3; b = -9; c = -8;
Δ = b2-4ac
Δ = -92-4·3·(-8)
Δ = 177
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{177}}{2*3}=\frac{9-\sqrt{177}}{6}
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-9)+\sqrt{177}}{2*3}=\frac{9+\sqrt{177}}{6}
$

See similar equations:

| x+15/2=-5 | | 5/6w+21=-1/3(2w-9) | | W(w+1)=24 | | 2a+2=-3a+12 | | 8z-8=15z+-30 | | (x/11)=(13/8) | | 7(3x+1)-18=3(4x-2)+13 | | 8-1/2x=-44 | | -3(k-5)-2(k+1)-13=-22 | | 3(x-3)1-2x=11 | | (3x+6/3)-(4x/x-3)=x | | 4m^2-12m+5=0 | | 8=16=8n | | 2x-1/2=3/2+1/2 | | x/5+5=-3 | | 3(z+1)-2=3z+1 | | 100000/1.25=x | | 2z^2+3z+9=0 | | 7y+4.3=60.3 | | 7x+7=5x+4 | | 2x2+3x-5=0 | | u2+6u+12=0 | | (3/4)*(3+2x)+1=13 | | 3c^2-2c-32=0 | | u^2+6u+12=0 | | 3/4(3+2x)+1=13 | | 2a+2=-3+12 | | 2(w+3)=-6(w+7) | | -3v-5(v-8)=7(12-8v)+4v | | 61=23^x | | 2=2+6-2x | | 4x^-9x-100=0 |

Equations solver categories