12x2=6-x

Simple and best practice solution for 12x2=6-x 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 12x2=6-x equation:



12x^2=6-x
We move all terms to the left:
12x^2-(6-x)=0
We add all the numbers together, and all the variables
12x^2-(-1x+6)=0
We get rid of parentheses
12x^2+1x-6=0
We add all the numbers together, and all the variables
12x^2+x-6=0
a = 12; b = 1; c = -6;
Δ = b2-4ac
Δ = 12-4·12·(-6)
Δ = 289
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{289}=17$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1)-17}{2*12}=\frac{-18}{24} =-3/4 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+17}{2*12}=\frac{16}{24} =2/3 $

See similar equations:

| 6(3x/2-40=30 | | -1/3x-5/6=0 | | x3-6x2+7x-10=0 | | 2x+13=3(x-7) | | 4(3x+1)=6+9x | | 5x÷10=50 | | 18=6(x−10) | | -18=6(x−10) | | 3•n=40+5n | | 0.1x^2+0.2x+0.3=0.8x | | 0.125-x=0.025 | | 1/(-2y)=5/2 | | 0.1x^2+0.2x+0.3=3000 | | x/2x-11=7x+16 | | 0.3(1-x)+0.7x=0.6 | | t^2+10t+4=0 | | 9m=81,m=-3 | | 7v-3=2v+9 | | 9m=81,m=3 | | 20+20÷20×20=y | | 7(2x+3)=4(4x+x)9 | | 9x-10=3x-70 | | x-(x*0.0075)=93295 | | 2z-10=-2 | | 6x–1=2x+39 | | -3x=33-27 | | -33=3(x+9) | | 3(x-2)/4=(x+2)/6-3 | | 1-k/5+k-1=1/5 | | 4x+9=17. | | 3y=29-× | | 1/4(-x+4)=12 |

Equations solver categories