x^2-6=8x-16

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Solution for x^2-6=8x-16 equation:


Simplifying
x2 + -6 = 8x + -16

Reorder the terms:
-6 + x2 = 8x + -16

Reorder the terms:
-6 + x2 = -16 + 8x

Solving
-6 + x2 = -16 + 8x

Solving for variable 'x'.

Reorder the terms:
-6 + 16 + -8x + x2 = -16 + 8x + 16 + -8x

Combine like terms: -6 + 16 = 10
10 + -8x + x2 = -16 + 8x + 16 + -8x

Reorder the terms:
10 + -8x + x2 = -16 + 16 + 8x + -8x

Combine like terms: -16 + 16 = 0
10 + -8x + x2 = 0 + 8x + -8x
10 + -8x + x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
10 + -8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + -8x + -10 + x2 = 0 + -10

Reorder the terms:
10 + -10 + -8x + x2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -8x + x2 = 0 + -10
-8x + x2 = 0 + -10

Combine like terms: 0 + -10 = -10
-8x + x2 = -10

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = -10 + 16

Reorder the terms:
16 + -8x + x2 = -10 + 16

Combine like terms: -10 + 16 = 6
16 + -8x + x2 = 6

Factor a perfect square on the left side:
(x + -4)(x + -4) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(x + -4) equal to 2.449489743 and -2.449489743.

Subproblem 1

x + -4 = 2.449489743 Simplifying x + -4 = 2.449489743 Reorder the terms: -4 + x = 2.449489743 Solving -4 + x = 2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 2.449489743 + 4 Combine like terms: -4 + 4 = 0 0 + x = 2.449489743 + 4 x = 2.449489743 + 4 Combine like terms: 2.449489743 + 4 = 6.449489743 x = 6.449489743 Simplifying x = 6.449489743

Subproblem 2

x + -4 = -2.449489743 Simplifying x + -4 = -2.449489743 Reorder the terms: -4 + x = -2.449489743 Solving -4 + x = -2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -2.449489743 + 4 Combine like terms: -4 + 4 = 0 0 + x = -2.449489743 + 4 x = -2.449489743 + 4 Combine like terms: -2.449489743 + 4 = 1.550510257 x = 1.550510257 Simplifying x = 1.550510257

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.449489743, 1.550510257}

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