x^2-4x-3=180

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Solution for x^2-4x-3=180 equation:


Simplifying
x2 + -4x + -3 = 180

Reorder the terms:
-3 + -4x + x2 = 180

Solving
-3 + -4x + x2 = 180

Solving for variable 'x'.

Reorder the terms:
-3 + -180 + -4x + x2 = 180 + -180

Combine like terms: -3 + -180 = -183
-183 + -4x + x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-183 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '183' to each side of the equation.
-183 + -4x + 183 + x2 = 0 + 183

Reorder the terms:
-183 + 183 + -4x + x2 = 0 + 183

Combine like terms: -183 + 183 = 0
0 + -4x + x2 = 0 + 183
-4x + x2 = 0 + 183

Combine like terms: 0 + 183 = 183
-4x + x2 = 183

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 183 + 4

Reorder the terms:
4 + -4x + x2 = 183 + 4

Combine like terms: 183 + 4 = 187
4 + -4x + x2 = 187

Factor a perfect square on the left side:
(x + -2)(x + -2) = 187

Calculate the square root of the right side: 13.674794331

Break this problem into two subproblems by setting 
(x + -2) equal to 13.674794331 and -13.674794331.

Subproblem 1

x + -2 = 13.674794331 Simplifying x + -2 = 13.674794331 Reorder the terms: -2 + x = 13.674794331 Solving -2 + x = 13.674794331 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 13.674794331 + 2 Combine like terms: -2 + 2 = 0 0 + x = 13.674794331 + 2 x = 13.674794331 + 2 Combine like terms: 13.674794331 + 2 = 15.674794331 x = 15.674794331 Simplifying x = 15.674794331

Subproblem 2

x + -2 = -13.674794331 Simplifying x + -2 = -13.674794331 Reorder the terms: -2 + x = -13.674794331 Solving -2 + x = -13.674794331 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -13.674794331 + 2 Combine like terms: -2 + 2 = 0 0 + x = -13.674794331 + 2 x = -13.674794331 + 2 Combine like terms: -13.674794331 + 2 = -11.674794331 x = -11.674794331 Simplifying x = -11.674794331

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.674794331, -11.674794331}

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