7x-x^2-6=x^2-3x+5

Simple and best practice solution for 7x-x^2-6=x^2-3x+5 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 7x-x^2-6=x^2-3x+5 equation:


Simplifying
7x + -1x2 + -6 = x2 + -3x + 5

Reorder the terms:
-6 + 7x + -1x2 = x2 + -3x + 5

Reorder the terms:
-6 + 7x + -1x2 = 5 + -3x + x2

Solving
-6 + 7x + -1x2 = 5 + -3x + x2

Solving for variable 'x'.

Reorder the terms:
-6 + -5 + 7x + 3x + -1x2 + -1x2 = 5 + -3x + x2 + -5 + 3x + -1x2

Combine like terms: -6 + -5 = -11
-11 + 7x + 3x + -1x2 + -1x2 = 5 + -3x + x2 + -5 + 3x + -1x2

Combine like terms: 7x + 3x = 10x
-11 + 10x + -1x2 + -1x2 = 5 + -3x + x2 + -5 + 3x + -1x2

Combine like terms: -1x2 + -1x2 = -2x2
-11 + 10x + -2x2 = 5 + -3x + x2 + -5 + 3x + -1x2

Reorder the terms:
-11 + 10x + -2x2 = 5 + -5 + -3x + 3x + x2 + -1x2

Combine like terms: 5 + -5 = 0
-11 + 10x + -2x2 = 0 + -3x + 3x + x2 + -1x2
-11 + 10x + -2x2 = -3x + 3x + x2 + -1x2

Combine like terms: -3x + 3x = 0
-11 + 10x + -2x2 = 0 + x2 + -1x2
-11 + 10x + -2x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-11 + 10x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
5.5 + -5x + x2 = 0

Move the constant term to the right:

Add '-5.5' to each side of the equation.
5.5 + -5x + -5.5 + x2 = 0 + -5.5

Reorder the terms:
5.5 + -5.5 + -5x + x2 = 0 + -5.5

Combine like terms: 5.5 + -5.5 = 0.0
0.0 + -5x + x2 = 0 + -5.5
-5x + x2 = 0 + -5.5

Combine like terms: 0 + -5.5 = -5.5
-5x + x2 = -5.5

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = -5.5 + 6.25

Reorder the terms:
6.25 + -5x + x2 = -5.5 + 6.25

Combine like terms: -5.5 + 6.25 = 0.75
6.25 + -5x + x2 = 0.75

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 0.75

Calculate the square root of the right side: 0.866025404

Break this problem into two subproblems by setting 
(x + -2.5) equal to 0.866025404 and -0.866025404.

Subproblem 1

x + -2.5 = 0.866025404 Simplifying x + -2.5 = 0.866025404 Reorder the terms: -2.5 + x = 0.866025404 Solving -2.5 + x = 0.866025404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 0.866025404 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 0.866025404 + 2.5 x = 0.866025404 + 2.5 Combine like terms: 0.866025404 + 2.5 = 3.366025404 x = 3.366025404 Simplifying x = 3.366025404

Subproblem 2

x + -2.5 = -0.866025404 Simplifying x + -2.5 = -0.866025404 Reorder the terms: -2.5 + x = -0.866025404 Solving -2.5 + x = -0.866025404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -0.866025404 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -0.866025404 + 2.5 x = -0.866025404 + 2.5 Combine like terms: -0.866025404 + 2.5 = 1.633974596 x = 1.633974596 Simplifying x = 1.633974596

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.366025404, 1.633974596}

See similar equations:

| 0=3U-4 | | -5x-2x-96=44 | | w-1-4=8 | | 4x=53000 | | fx=-6x+11 | | 6x+15=7x-20 | | 3x+1.2(-3)=2.4 | | 3x+4x+90=90 | | 6x-24=30+13x | | 3(-2)+1.2y=2.4 | | 4+8q=3+7q | | 10x-65-5x=80 | | 3x+(18-x)=3 | | 3x+4x+10=180 | | -1.9U+2.4=-33 | | 9-6s=3-4s | | 3x+4x+20=180 | | cos(x)cos(7x)cos(3x)cos(5x)=0 | | (x^2y-3xy^2+5xy^2)-(-x^2y+3xy^2-3y^2)= | | 3x+4x+200=180 | | -16.5+8.8= | | 3x+4x+30=180 | | 6x-9x-44=28 | | 4u+(u-5)=15 | | -16.5+(-8.8)= | | -4X+1=12 | | 3x+4x+80=180 | | -4x+10x-120=54 | | 2=3U-10 | | 32+97+x=180 | | F(x)=6x+11 | | (7x-8)-8=-2 |

Equations solver categories