x^2+10=18x-12

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Solution for x^2+10=18x-12 equation:


Simplifying
x2 + 10 = 18x + -12

Reorder the terms:
10 + x2 = 18x + -12

Reorder the terms:
10 + x2 = -12 + 18x

Solving
10 + x2 = -12 + 18x

Solving for variable 'x'.

Reorder the terms:
10 + 12 + -18x + x2 = -12 + 18x + 12 + -18x

Combine like terms: 10 + 12 = 22
22 + -18x + x2 = -12 + 18x + 12 + -18x

Reorder the terms:
22 + -18x + x2 = -12 + 12 + 18x + -18x

Combine like terms: -12 + 12 = 0
22 + -18x + x2 = 0 + 18x + -18x
22 + -18x + x2 = 18x + -18x

Combine like terms: 18x + -18x = 0
22 + -18x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-22' to each side of the equation.
22 + -18x + -22 + x2 = 0 + -22

Reorder the terms:
22 + -22 + -18x + x2 = 0 + -22

Combine like terms: 22 + -22 = 0
0 + -18x + x2 = 0 + -22
-18x + x2 = 0 + -22

Combine like terms: 0 + -22 = -22
-18x + x2 = -22

The x term is -18x.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18x + 81 + x2 = -22 + 81

Reorder the terms:
81 + -18x + x2 = -22 + 81

Combine like terms: -22 + 81 = 59
81 + -18x + x2 = 59

Factor a perfect square on the left side:
(x + -9)(x + -9) = 59

Calculate the square root of the right side: 7.681145748

Break this problem into two subproblems by setting 
(x + -9) equal to 7.681145748 and -7.681145748.

Subproblem 1

x + -9 = 7.681145748 Simplifying x + -9 = 7.681145748 Reorder the terms: -9 + x = 7.681145748 Solving -9 + x = 7.681145748 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 7.681145748 + 9 Combine like terms: -9 + 9 = 0 0 + x = 7.681145748 + 9 x = 7.681145748 + 9 Combine like terms: 7.681145748 + 9 = 16.681145748 x = 16.681145748 Simplifying x = 16.681145748

Subproblem 2

x + -9 = -7.681145748 Simplifying x + -9 = -7.681145748 Reorder the terms: -9 + x = -7.681145748 Solving -9 + x = -7.681145748 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = -7.681145748 + 9 Combine like terms: -9 + 9 = 0 0 + x = -7.681145748 + 9 x = -7.681145748 + 9 Combine like terms: -7.681145748 + 9 = 1.318854252 x = 1.318854252 Simplifying x = 1.318854252

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.681145748, 1.318854252}

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