8x2+34x-9=0

Simple and best practice solution for 8x2+34x-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 8x2+34x-9=0 equation:



8x^2+34x-9=0
a = 8; b = 34; c = -9;
Δ = b2-4ac
Δ = 342-4·8·(-9)
Δ = 1444
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1444}=38$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(34)-38}{2*8}=\frac{-72}{16} =-4+1/2 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(34)+38}{2*8}=\frac{4}{16} =1/4 $

See similar equations:

| -4(1+4x)=-132 | | 9(x-5)=5+9(x+5x) | | 5(5r+1)=205 | | w-8.44=2.96 | | 63x^2+11x-40=0 | | 364=-7(4+7n) | | x–14=3x–11 | | 1.8x-5=4.3x | | x/1-x=81/17 | | 2n+2/1n=10 | | -4(5x+3)+6x=86 | | 1/2a+2/3*50=30 | | 5m+7m=36 | | 8k-6(3k-3)=88 | | -1.30=7t–1/2(9.8)t^2 | | -1.30=7t–½(9.8)t2 | | x-(.3x)=5200 | | x–52=40 | | -87=-3(8+3n | | 3-6y=-36 | | 8×2m-5-6×3m-7=1 | | 1/3g+2/3=1/6 | | 2x-3+4x=8x-3-x | | 2x-3+4x=8x-3x | | 1/2x-5=3/2x+4 | | 5f+2=6-2f | | 2x-2(x+12)=16 | | 3x+18+2x+22=90 | | 5p+2=19 | | 1x+5=4x+61 | | 26x÷5=5 | | 3x+18+2x+22=99 |

Equations solver categories