3x^2=56-13x

Simple and best practice solution for 3x^2=56-13x 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 3x^2=56-13x equation:


Simplifying
3x2 = 56 + -13x

Solving
3x2 = 56 + -13x

Solving for variable 'x'.

Reorder the terms:
-56 + 13x + 3x2 = 56 + -13x + -56 + 13x

Reorder the terms:
-56 + 13x + 3x2 = 56 + -56 + -13x + 13x

Combine like terms: 56 + -56 = 0
-56 + 13x + 3x2 = 0 + -13x + 13x
-56 + 13x + 3x2 = -13x + 13x

Combine like terms: -13x + 13x = 0
-56 + 13x + 3x2 = 0

Factor a trinomial.
(-7 + -1x)(8 + -3x) = 0

Subproblem 1

Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(8 + -3x)' equal to zero and attempt to solve: Simplifying 8 + -3x = 0 Solving 8 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -3x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -3x = 0 + -8 -3x = 0 + -8 Combine like terms: 0 + -8 = -8 -3x = -8 Divide each side by '-3'. x = 2.666666667 Simplifying x = 2.666666667

Solution

x = {-7, 2.666666667}

See similar equations:

| -0.2*y+0.6*x=0 | | 4=k | | -0.2*x+0.6*y=0 | | 13.1-0.72=8.2 | | 4g+18=7g | | cosx(x-15)=0.95 | | -2x-32-(-1)-24=-3 | | -6x-19=29 | | .8t+.4=.6666666666666667 | | y=-18+-9x | | 6g=27-3g | | 11x-24=2x+12 | | 3z+12=9 | | 20-1/3z=1/2z;12 | | -4y+0=-32 | | 4-3x^2-9x-7+2x^2= | | Cos-1(11/28)=x | | -11+7+2m+2=m+4 | | 76=6v | | 13m-3m= | | 8g-24=2g | | 2w=56 | | 7p-8=-2p+13 | | -14-3x=-35 | | 10=12-2w | | 13m+6n-3m+10n= | | x+2*4*2=24 | | -13+4a=7a-1 | | 5a^2-41a+1=7 | | u/6=78 | | -2(5y-3)=-10y-6 | | -4(3+x)=-12 |

Equations solver categories