180=(X^2-4)+(4-2X)

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Solution for 180=(X^2-4)+(4-2X) equation:


Simplifying
180 = (X2 + -4) + (4 + -2X)

Reorder the terms:
180 = (-4 + X2) + (4 + -2X)

Remove parenthesis around (-4 + X2)
180 = -4 + X2 + (4 + -2X)

Remove parenthesis around (4 + -2X)
180 = -4 + X2 + 4 + -2X

Reorder the terms:
180 = -4 + 4 + -2X + X2

Combine like terms: -4 + 4 = 0
180 = 0 + -2X + X2
180 = -2X + X2

Solving
180 = -2X + X2

Solving for variable 'X'.

Reorder the terms:
180 + 2X + -1X2 = -2X + 2X + X2 + -1X2

Combine like terms: -2X + 2X = 0
180 + 2X + -1X2 = 0 + X2 + -1X2
180 + 2X + -1X2 = X2 + -1X2

Combine like terms: X2 + -1X2 = 0
180 + 2X + -1X2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-180 + -2X + X2 = 0

Move the constant term to the right:

Add '180' to each side of the equation.
-180 + -2X + 180 + X2 = 0 + 180

Reorder the terms:
-180 + 180 + -2X + X2 = 0 + 180

Combine like terms: -180 + 180 = 0
0 + -2X + X2 = 0 + 180
-2X + X2 = 0 + 180

Combine like terms: 0 + 180 = 180
-2X + X2 = 180

The X term is -2X.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2X + 1 + X2 = 180 + 1

Reorder the terms:
1 + -2X + X2 = 180 + 1

Combine like terms: 180 + 1 = 181
1 + -2X + X2 = 181

Factor a perfect square on the left side:
(X + -1)(X + -1) = 181

Calculate the square root of the right side: 13.453624047

Break this problem into two subproblems by setting 
(X + -1) equal to 13.453624047 and -13.453624047.

Subproblem 1

X + -1 = 13.453624047 Simplifying X + -1 = 13.453624047 Reorder the terms: -1 + X = 13.453624047 Solving -1 + X = 13.453624047 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + X = 13.453624047 + 1 Combine like terms: -1 + 1 = 0 0 + X = 13.453624047 + 1 X = 13.453624047 + 1 Combine like terms: 13.453624047 + 1 = 14.453624047 X = 14.453624047 Simplifying X = 14.453624047

Subproblem 2

X + -1 = -13.453624047 Simplifying X + -1 = -13.453624047 Reorder the terms: -1 + X = -13.453624047 Solving -1 + X = -13.453624047 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + X = -13.453624047 + 1 Combine like terms: -1 + 1 = 0 0 + X = -13.453624047 + 1 X = -13.453624047 + 1 Combine like terms: -13.453624047 + 1 = -12.453624047 X = -12.453624047 Simplifying X = -12.453624047

Solution

The solution to the problem is based on the solutions from the subproblems. X = {14.453624047, -12.453624047}

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