x^2-10+18-3x=180

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Solution for x^2-10+18-3x=180 equation:


Simplifying
x2 + -10 + 18 + -3x = 180

Reorder the terms:
-10 + 18 + -3x + x2 = 180

Combine like terms: -10 + 18 = 8
8 + -3x + x2 = 180

Solving
8 + -3x + x2 = 180

Solving for variable 'x'.

Reorder the terms:
8 + -180 + -3x + x2 = 180 + -180

Combine like terms: 8 + -180 = -172
-172 + -3x + x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-172 + -3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '172' to each side of the equation.
-172 + -3x + 172 + x2 = 0 + 172

Reorder the terms:
-172 + 172 + -3x + x2 = 0 + 172

Combine like terms: -172 + 172 = 0
0 + -3x + x2 = 0 + 172
-3x + x2 = 0 + 172

Combine like terms: 0 + 172 = 172
-3x + x2 = 172

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 172 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 172 + 2.25

Combine like terms: 172 + 2.25 = 174.25
2.25 + -3x + x2 = 174.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 174.25

Calculate the square root of the right side: 13.200378782

Break this problem into two subproblems by setting 
(x + -1.5) equal to 13.200378782 and -13.200378782.

Subproblem 1

x + -1.5 = 13.200378782 Simplifying x + -1.5 = 13.200378782 Reorder the terms: -1.5 + x = 13.200378782 Solving -1.5 + x = 13.200378782 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 13.200378782 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 13.200378782 + 1.5 x = 13.200378782 + 1.5 Combine like terms: 13.200378782 + 1.5 = 14.700378782 x = 14.700378782 Simplifying x = 14.700378782

Subproblem 2

x + -1.5 = -13.200378782 Simplifying x + -1.5 = -13.200378782 Reorder the terms: -1.5 + x = -13.200378782 Solving -1.5 + x = -13.200378782 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -13.200378782 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -13.200378782 + 1.5 x = -13.200378782 + 1.5 Combine like terms: -13.200378782 + 1.5 = -11.700378782 x = -11.700378782 Simplifying x = -11.700378782

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.700378782, -11.700378782}

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