3x2+84x=0

Simple and best practice solution for 3x2+84x=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+84x=0 equation: 



3x^2+84x=0

a = 3; b = 84; c = 0;
Δ = b2-4ac
Δ = 842-4·3·0
Δ = 7056
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{7056}=84$


$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(84)-84}{2*3}=\frac{-168}{6}
=-28
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(84)+84}{2*3}=\frac{0}{6}
=0
$

See similar equations:

| 10x-2=4-2x | | -1/2(x+17)=1 | | x+27+3x+3=180 | | -x3-10=8 | | 34x+20=34x+20 | | 90=0.5a1.21^2 | | Y=(x-2)/(x+2) | | 3x–2=5(3x+4) | | 9(k-3)=(k-2) | | 3x+9=5+2x | | 6x+5=40+x | | 15x-10=-5x+10 | | x/x/8=3/4 | | 7(m+1)=119 | | 8(2m-2)=7(3m+2) | | -2.5e=-32.5 | | 6c+22=67 | | 100=2(8p+5)+2p | | 4x=9=37 | | 46+134+x=180 | | b+7+3b=-21 | | 26x=x | | 3/2(x+5)+5(x+4)=60 | | 18p-42+11p=18+9p | | 11(x-4)=11 | | 15.75+x=1.75 | | 9-(1-3y=4+y)-(3-y) | | -9x+3=-3(3x-1 | | 1x+10=354 | | 2t-46=38 | | 4(2q-3)=8q | | 0=4t |

Equations solver categories