3x^2-8x-56=x^2+x

Simple and best practice solution for 3x^2-8x-56=x^2+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 3x^2-8x-56=x^2+x equation: 


Simplifying
3x2 + -8x + -56 = x2 + x

Reorder the terms:
-56 + -8x + 3x2 = x2 + x

Reorder the terms:
-56 + -8x + 3x2 = x + x2

Solving
-56 + -8x + 3x2 = x + x2

Solving for variable 'x'.

Reorder the terms:
-56 + -8x + -1x + 3x2 + -1x2 = x + x2 + -1x + -1x2

Combine like terms: -8x + -1x = -9x
-56 + -9x + 3x2 + -1x2 = x + x2 + -1x + -1x2

Combine like terms: 3x2 + -1x2 = 2x2
-56 + -9x + 2x2 = x + x2 + -1x + -1x2

Reorder the terms:
-56 + -9x + 2x2 = x + -1x + x2 + -1x2

Combine like terms: x + -1x = 0
-56 + -9x + 2x2 = 0 + x2 + -1x2
-56 + -9x + 2x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-56 + -9x + 2x2 = 0

Factor a trinomial.
(-7 + -2x)(8 + -1x) = 0


Subproblem 1
Set the factor '(-7 + -2x)' equal to zero and attempt to solve:

Simplifying
-7 + -2x = 0

Solving
-7 + -2x = 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 + -2x = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -2x = 0 + 7
-2x = 0 + 7

Combine like terms: 0 + 7 = 7
-2x = 7

Divide each side by '-2'.
x = -3.5

Simplifying
x = -3.5

Subproblem 2
Set the factor '(8 + -1x)' equal to zero and attempt to solve:

Simplifying
8 + -1x = 0

Solving
8 + -1x = 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 + -1x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -1x = 0 + -8
-1x = 0 + -8

Combine like terms: 0 + -8 = -8
-1x = -8

Divide each side by '-1'.
x = 8

Simplifying
x = 8
Solution
x = {-3.5, 8}

See similar equations:

| -x+3x=x+6 | | 6x-9=3x-5 | | -3x-5+2x-11=13-4x-6+6x-5 | | 2x-4x+4=(3x+4)(x-2) | | 2x+23=-3x-17 | | 1.035x+2.715x-3.6225+1.3=7.2-2(4.48) | | 2x+3y+4=256 | | 0.62=-logx | | -4c+2=18 | | 10-(9x-7)=11 | | C=2p+215 | | 0.04(2x+5)=0.08(x+7)-.36 | | -2x-5-7x-2=-2x-4+7x-8 | | 10*x=8.6971 | | x-7.4=-6.6 | | 5x+3*5x-2=140 | | 10xX=8.6971 | | Cos^2x-4cosx+3= | | 6-4x-4=5.4x | | 5x-6=-12 | | 11k=.99 | | -28=13-x | | -x+5+7x-12=3-2x-8+6x-4 | | x^3-2x^2+x=2 | | 3b+6+b=4b+6 | | 5x^3-12x+27=0 | | cx-7=23 | | x+2(x+1)=4(x-1) | | 8y-3=10y+7 | | 16=-14-x | | 5x(32-15)= | | 6-3(4x-1)=4(x-2)+1 |

Equations solver categories