x^2-16x+64=23

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Solution for x^2-16x+64=23 equation:


Simplifying
x2 + -16x + 64 = 23

Reorder the terms:
64 + -16x + x2 = 23

Solving
64 + -16x + x2 = 23

Solving for variable 'x'.

Reorder the terms:
64 + -23 + -16x + x2 = 23 + -23

Combine like terms: 64 + -23 = 41
41 + -16x + x2 = 23 + -23

Combine like terms: 23 + -23 = 0
41 + -16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-41' to each side of the equation.
41 + -16x + -41 + x2 = 0 + -41

Reorder the terms:
41 + -41 + -16x + x2 = 0 + -41

Combine like terms: 41 + -41 = 0
0 + -16x + x2 = 0 + -41
-16x + x2 = 0 + -41

Combine like terms: 0 + -41 = -41
-16x + x2 = -41

The x term is -16x.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16x + 64 + x2 = -41 + 64

Reorder the terms:
64 + -16x + x2 = -41 + 64

Combine like terms: -41 + 64 = 23
64 + -16x + x2 = 23

Factor a perfect square on the left side:
(x + -8)(x + -8) = 23

Calculate the square root of the right side: 4.795831523

Break this problem into two subproblems by setting 
(x + -8) equal to 4.795831523 and -4.795831523.

Subproblem 1

x + -8 = 4.795831523 Simplifying x + -8 = 4.795831523 Reorder the terms: -8 + x = 4.795831523 Solving -8 + x = 4.795831523 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 4.795831523 + 8 Combine like terms: -8 + 8 = 0 0 + x = 4.795831523 + 8 x = 4.795831523 + 8 Combine like terms: 4.795831523 + 8 = 12.795831523 x = 12.795831523 Simplifying x = 12.795831523

Subproblem 2

x + -8 = -4.795831523 Simplifying x + -8 = -4.795831523 Reorder the terms: -8 + x = -4.795831523 Solving -8 + x = -4.795831523 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -4.795831523 + 8 Combine like terms: -8 + 8 = 0 0 + x = -4.795831523 + 8 x = -4.795831523 + 8 Combine like terms: -4.795831523 + 8 = 3.204168477 x = 3.204168477 Simplifying x = 3.204168477

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.795831523, 3.204168477}

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