(2x-3)+(x^2-4x)=180

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


Simplifying
(2x + -3) + (x2 + -4x) = 180

Reorder the terms:
(-3 + 2x) + (x2 + -4x) = 180

Remove parenthesis around (-3 + 2x)
-3 + 2x + (x2 + -4x) = 180

Reorder the terms:
-3 + 2x + (-4x + x2) = 180

Remove parenthesis around (-4x + x2)
-3 + 2x + -4x + x2 = 180

Combine like terms: 2x + -4x = -2x
-3 + -2x + x2 = 180

Solving
-3 + -2x + x2 = 180

Solving for variable 'x'.

Reorder the terms:
-3 + -180 + -2x + x2 = 180 + -180

Combine like terms: -3 + -180 = -183
-183 + -2x + x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-183 + -2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '183' to each side of the equation.
-183 + -2x + 183 + x2 = 0 + 183

Reorder the terms:
-183 + 183 + -2x + x2 = 0 + 183

Combine like terms: -183 + 183 = 0
0 + -2x + x2 = 0 + 183
-2x + x2 = 0 + 183

Combine like terms: 0 + 183 = 183
-2x + x2 = 183

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 = 183 + 1

Reorder the terms:
1 + -2x + x2 = 183 + 1

Combine like terms: 183 + 1 = 184
1 + -2x + x2 = 184

Factor a perfect square on the left side:
(x + -1)(x + -1) = 184

Calculate the square root of the right side: 13.564659966

Break this problem into two subproblems by setting 
(x + -1) equal to 13.564659966 and -13.564659966.

Subproblem 1

x + -1 = 13.564659966 Simplifying x + -1 = 13.564659966 Reorder the terms: -1 + x = 13.564659966 Solving -1 + x = 13.564659966 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 = 13.564659966 + 1 Combine like terms: -1 + 1 = 0 0 + x = 13.564659966 + 1 x = 13.564659966 + 1 Combine like terms: 13.564659966 + 1 = 14.564659966 x = 14.564659966 Simplifying x = 14.564659966

Subproblem 2

x + -1 = -13.564659966 Simplifying x + -1 = -13.564659966 Reorder the terms: -1 + x = -13.564659966 Solving -1 + x = -13.564659966 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 = -13.564659966 + 1 Combine like terms: -1 + 1 = 0 0 + x = -13.564659966 + 1 x = -13.564659966 + 1 Combine like terms: -13.564659966 + 1 = -12.564659966 x = -12.564659966 Simplifying x = -12.564659966

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.564659966, -12.564659966}

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