180-x=46(90-2x^2)

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Solution for 180-x=46(90-2x^2) equation:


Simplifying
180 + -1x = 46(90 + -2x2)
180 + -1x = (90 * 46 + -2x2 * 46)
180 + -1x = (4140 + -92x2)

Solving
180 + -1x = 4140 + -92x2

Solving for variable 'x'.

Reorder the terms:
180 + -4140 + -1x + 92x2 = 4140 + -92x2 + -4140 + 92x2

Combine like terms: 180 + -4140 = -3960
-3960 + -1x + 92x2 = 4140 + -92x2 + -4140 + 92x2

Reorder the terms:
-3960 + -1x + 92x2 = 4140 + -4140 + -92x2 + 92x2

Combine like terms: 4140 + -4140 = 0
-3960 + -1x + 92x2 = 0 + -92x2 + 92x2
-3960 + -1x + 92x2 = -92x2 + 92x2

Combine like terms: -92x2 + 92x2 = 0
-3960 + -1x + 92x2 = 0

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

Divide each side by '92'.
-43.04347826 + -0.01086956522x + x2 = 0

Move the constant term to the right:

Add '43.04347826' to each side of the equation.
-43.04347826 + -0.01086956522x + 43.04347826 + x2 = 0 + 43.04347826

Reorder the terms:
-43.04347826 + 43.04347826 + -0.01086956522x + x2 = 0 + 43.04347826

Combine like terms: -43.04347826 + 43.04347826 = 0.00000000
0.00000000 + -0.01086956522x + x2 = 0 + 43.04347826
-0.01086956522x + x2 = 0 + 43.04347826

Combine like terms: 0 + 43.04347826 = 43.04347826
-0.01086956522x + x2 = 43.04347826

The x term is -0.01086956522x.  Take half its coefficient (-0.00543478261).
Square it (0.00002953686202) and add it to both sides.

Add '0.00002953686202' to each side of the equation.
-0.01086956522x + 0.00002953686202 + x2 = 43.04347826 + 0.00002953686202

Reorder the terms:
0.00002953686202 + -0.01086956522x + x2 = 43.04347826 + 0.00002953686202

Combine like terms: 43.04347826 + 0.00002953686202 = 43.04350779686202
0.00002953686202 + -0.01086956522x + x2 = 43.04350779686202

Factor a perfect square on the left side:
(x + -0.00543478261)(x + -0.00543478261) = 43.04350779686202

Calculate the square root of the right side: 6.560755124

Break this problem into two subproblems by setting 
(x + -0.00543478261) equal to 6.560755124 and -6.560755124.

Subproblem 1

x + -0.00543478261 = 6.560755124 Simplifying x + -0.00543478261 = 6.560755124 Reorder the terms: -0.00543478261 + x = 6.560755124 Solving -0.00543478261 + x = 6.560755124 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.00543478261' to each side of the equation. -0.00543478261 + 0.00543478261 + x = 6.560755124 + 0.00543478261 Combine like terms: -0.00543478261 + 0.00543478261 = 0.00000000000 0.00000000000 + x = 6.560755124 + 0.00543478261 x = 6.560755124 + 0.00543478261 Combine like terms: 6.560755124 + 0.00543478261 = 6.56618990661 x = 6.56618990661 Simplifying x = 6.56618990661

Subproblem 2

x + -0.00543478261 = -6.560755124 Simplifying x + -0.00543478261 = -6.560755124 Reorder the terms: -0.00543478261 + x = -6.560755124 Solving -0.00543478261 + x = -6.560755124 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.00543478261' to each side of the equation. -0.00543478261 + 0.00543478261 + x = -6.560755124 + 0.00543478261 Combine like terms: -0.00543478261 + 0.00543478261 = 0.00000000000 0.00000000000 + x = -6.560755124 + 0.00543478261 x = -6.560755124 + 0.00543478261 Combine like terms: -6.560755124 + 0.00543478261 = -6.55532034139 x = -6.55532034139 Simplifying x = -6.55532034139

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.56618990661, -6.55532034139}

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