8x-11=x^2-6x+8

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Solution for 8x-11=x^2-6x+8 equation:


Simplifying
8x + -11 = x2 + -6x + 8

Reorder the terms:
-11 + 8x = x2 + -6x + 8

Reorder the terms:
-11 + 8x = 8 + -6x + x2

Solving
-11 + 8x = 8 + -6x + x2

Solving for variable 'x'.

Reorder the terms:
-11 + -8 + 8x + 6x + -1x2 = 8 + -6x + x2 + -8 + 6x + -1x2

Combine like terms: -11 + -8 = -19
-19 + 8x + 6x + -1x2 = 8 + -6x + x2 + -8 + 6x + -1x2

Combine like terms: 8x + 6x = 14x
-19 + 14x + -1x2 = 8 + -6x + x2 + -8 + 6x + -1x2

Reorder the terms:
-19 + 14x + -1x2 = 8 + -8 + -6x + 6x + x2 + -1x2

Combine like terms: 8 + -8 = 0
-19 + 14x + -1x2 = 0 + -6x + 6x + x2 + -1x2
-19 + 14x + -1x2 = -6x + 6x + x2 + -1x2

Combine like terms: -6x + 6x = 0
-19 + 14x + -1x2 = 0 + x2 + -1x2
-19 + 14x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-19 + 14x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
19 + -14x + x2 = 0

Move the constant term to the right:

Add '-19' to each side of the equation.
19 + -14x + -19 + x2 = 0 + -19

Reorder the terms:
19 + -19 + -14x + x2 = 0 + -19

Combine like terms: 19 + -19 = 0
0 + -14x + x2 = 0 + -19
-14x + x2 = 0 + -19

Combine like terms: 0 + -19 = -19
-14x + x2 = -19

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = -19 + 49

Reorder the terms:
49 + -14x + x2 = -19 + 49

Combine like terms: -19 + 49 = 30
49 + -14x + x2 = 30

Factor a perfect square on the left side:
(x + -7)(x + -7) = 30

Calculate the square root of the right side: 5.477225575

Break this problem into two subproblems by setting 
(x + -7) equal to 5.477225575 and -5.477225575.

Subproblem 1

x + -7 = 5.477225575 Simplifying x + -7 = 5.477225575 Reorder the terms: -7 + x = 5.477225575 Solving -7 + x = 5.477225575 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 5.477225575 + 7 Combine like terms: -7 + 7 = 0 0 + x = 5.477225575 + 7 x = 5.477225575 + 7 Combine like terms: 5.477225575 + 7 = 12.477225575 x = 12.477225575 Simplifying x = 12.477225575

Subproblem 2

x + -7 = -5.477225575 Simplifying x + -7 = -5.477225575 Reorder the terms: -7 + x = -5.477225575 Solving -7 + x = -5.477225575 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -5.477225575 + 7 Combine like terms: -7 + 7 = 0 0 + x = -5.477225575 + 7 x = -5.477225575 + 7 Combine like terms: -5.477225575 + 7 = 1.522774425 x = 1.522774425 Simplifying x = 1.522774425

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.477225575, 1.522774425}

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