11x=x^2+8

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


Simplifying
11x = x2 + 8

Reorder the terms:
11x = 8 + x2

Solving
11x = 8 + x2

Solving for variable 'x'.

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

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

Combine like terms: 8 + -8 = 0
-8 + 11x + -1x2 = 0 + x2 + -1x2
-8 + 11x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-8 + 11x + -1x2 = 0

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

Divide each side by '-1'.
8 + -11x + x2 = 0

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + -11x + -8 + x2 = 0 + -8

Reorder the terms:
8 + -8 + -11x + x2 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -11x + x2 = 0 + -8
-11x + x2 = 0 + -8

Combine like terms: 0 + -8 = -8
-11x + x2 = -8

The x term is -11x.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11x + 30.25 + x2 = -8 + 30.25

Reorder the terms:
30.25 + -11x + x2 = -8 + 30.25

Combine like terms: -8 + 30.25 = 22.25
30.25 + -11x + x2 = 22.25

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 22.25

Calculate the square root of the right side: 4.716990566

Break this problem into two subproblems by setting 
(x + -5.5) equal to 4.716990566 and -4.716990566.

Subproblem 1

x + -5.5 = 4.716990566 Simplifying x + -5.5 = 4.716990566 Reorder the terms: -5.5 + x = 4.716990566 Solving -5.5 + x = 4.716990566 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 4.716990566 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 4.716990566 + 5.5 x = 4.716990566 + 5.5 Combine like terms: 4.716990566 + 5.5 = 10.216990566 x = 10.216990566 Simplifying x = 10.216990566

Subproblem 2

x + -5.5 = -4.716990566 Simplifying x + -5.5 = -4.716990566 Reorder the terms: -5.5 + x = -4.716990566 Solving -5.5 + x = -4.716990566 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -4.716990566 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -4.716990566 + 5.5 x = -4.716990566 + 5.5 Combine like terms: -4.716990566 + 5.5 = 0.783009434 x = 0.783009434 Simplifying x = 0.783009434

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.216990566, 0.783009434}

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