x^2+144-2x^2-4(12-2x)+4-25=0

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Solution for x^2+144-2x^2-4(12-2x)+4-25=0 equation:


Simplifying
x2 + 144 + -2x2 + -4(12 + -2x) + 4 + -25 = 0
x2 + 144 + -2x2 + (12 * -4 + -2x * -4) + 4 + -25 = 0
x2 + 144 + -2x2 + (-48 + 8x) + 4 + -25 = 0

Reorder the terms:
144 + -48 + 4 + -25 + 8x + x2 + -2x2 = 0

Combine like terms: 144 + -48 = 96
96 + 4 + -25 + 8x + x2 + -2x2 = 0

Combine like terms: 96 + 4 = 100
100 + -25 + 8x + x2 + -2x2 = 0

Combine like terms: 100 + -25 = 75
75 + 8x + x2 + -2x2 = 0

Combine like terms: x2 + -2x2 = -1x2
75 + 8x + -1x2 = 0

Solving
75 + 8x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
-75 + -8x + x2 = 0

Move the constant term to the right:

Add '75' to each side of the equation.
-75 + -8x + 75 + x2 = 0 + 75

Reorder the terms:
-75 + 75 + -8x + x2 = 0 + 75

Combine like terms: -75 + 75 = 0
0 + -8x + x2 = 0 + 75
-8x + x2 = 0 + 75

Combine like terms: 0 + 75 = 75
-8x + x2 = 75

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 = 75 + 16

Reorder the terms:
16 + -8x + x2 = 75 + 16

Combine like terms: 75 + 16 = 91
16 + -8x + x2 = 91

Factor a perfect square on the left side:
(x + -4)(x + -4) = 91

Calculate the square root of the right side: 9.539392014

Break this problem into two subproblems by setting 
(x + -4) equal to 9.539392014 and -9.539392014.

Subproblem 1

x + -4 = 9.539392014 Simplifying x + -4 = 9.539392014 Reorder the terms: -4 + x = 9.539392014 Solving -4 + x = 9.539392014 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 = 9.539392014 + 4 Combine like terms: -4 + 4 = 0 0 + x = 9.539392014 + 4 x = 9.539392014 + 4 Combine like terms: 9.539392014 + 4 = 13.539392014 x = 13.539392014 Simplifying x = 13.539392014

Subproblem 2

x + -4 = -9.539392014 Simplifying x + -4 = -9.539392014 Reorder the terms: -4 + x = -9.539392014 Solving -4 + x = -9.539392014 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 = -9.539392014 + 4 Combine like terms: -4 + 4 = 0 0 + x = -9.539392014 + 4 x = -9.539392014 + 4 Combine like terms: -9.539392014 + 4 = -5.539392014 x = -5.539392014 Simplifying x = -5.539392014

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.539392014, -5.539392014}

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