3x2+5x-9=0

Simple and best practice solution for 3x2+5x-9=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+5x-9=0 equation: 



3x^2+5x-9=0

a = 3; b = 5; c = -9;
Δ = b2-4ac
Δ = 52-4·3·(-9)
Δ = 133
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{-(5)-\sqrt{133}}{2*3}=\frac{-5-\sqrt{133}}{6}
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(5)+\sqrt{133}}{2*3}=\frac{-5+\sqrt{133}}{6}
$

See similar equations:

| 25s^2-1=0 | | 7(x-3)=3x-4 | | 2+3x-4x=3 | | 4(h+6)=(h-2) | | -2w/5=4 | | 2m-7=(3-m) | | 2x/6-2=-10 | | =6.5x+8 | | 3x•x-16x+5=0 | | 8=2.3x+3.1 | | 4x-5=×+7 | | 2x+4/5=2x+1 | | 6=4(x+4) | | 0,5x+2-1,3x=1,5x-6 | | –2x–5=6–x–3x | | F(x)=25x2-49 | | 10x-1/4=9×+3/8 | | 30x-(15(x-2)-6(3x+1)+6(2+x))=240 | | 34x=-6 | | m-1÷2-m-2÷3=m-4÷7 | | x^-5/2=8^-2 | | x^2-5/2=8^-2 | | h-32=15 | | x^-5/2=8^2 | | 5/2x=-5 | | 5(a-2)+(a-3)=2(2a+1)-9 | | 14x^2+28X=35 | | 10-(y×15)=y+14 | | 6x-2(3-2x)+8+2x=32 | | 9x-39=40 | | 4y+17=20 | | 83.9=b/7 |

Equations solver categories