-0.5x^2+36x-178=380

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Solution for -0.5x^2+36x-178=380 equation:


Simplifying
-0.5x2 + 36x + -178 = 380

Reorder the terms:
-178 + 36x + -0.5x2 = 380

Solving
-178 + 36x + -0.5x2 = 380

Solving for variable 'x'.

Reorder the terms:
-178 + -380 + 36x + -0.5x2 = 380 + -380

Combine like terms: -178 + -380 = -558
-558 + 36x + -0.5x2 = 380 + -380

Combine like terms: 380 + -380 = 0
-558 + 36x + -0.5x2 = 0

Begin completing the square.  Divide all terms by
-0.5 the coefficient of the squared term: 

Divide each side by '-0.5'.
1116 + -72x + x2 = 0

Move the constant term to the right:

Add '-1116' to each side of the equation.
1116 + -72x + -1116 + x2 = 0 + -1116

Reorder the terms:
1116 + -1116 + -72x + x2 = 0 + -1116

Combine like terms: 1116 + -1116 = 0
0 + -72x + x2 = 0 + -1116
-72x + x2 = 0 + -1116

Combine like terms: 0 + -1116 = -1116
-72x + x2 = -1116

The x term is -72x.  Take half its coefficient (-36).
Square it (1296) and add it to both sides.

Add '1296' to each side of the equation.
-72x + 1296 + x2 = -1116 + 1296

Reorder the terms:
1296 + -72x + x2 = -1116 + 1296

Combine like terms: -1116 + 1296 = 180
1296 + -72x + x2 = 180

Factor a perfect square on the left side:
(x + -36)(x + -36) = 180

Calculate the square root of the right side: 13.416407865

Break this problem into two subproblems by setting 
(x + -36) equal to 13.416407865 and -13.416407865.

Subproblem 1

x + -36 = 13.416407865 Simplifying x + -36 = 13.416407865 Reorder the terms: -36 + x = 13.416407865 Solving -36 + x = 13.416407865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 36 + x = 13.416407865 + 36 Combine like terms: -36 + 36 = 0 0 + x = 13.416407865 + 36 x = 13.416407865 + 36 Combine like terms: 13.416407865 + 36 = 49.416407865 x = 49.416407865 Simplifying x = 49.416407865

Subproblem 2

x + -36 = -13.416407865 Simplifying x + -36 = -13.416407865 Reorder the terms: -36 + x = -13.416407865 Solving -36 + x = -13.416407865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 36 + x = -13.416407865 + 36 Combine like terms: -36 + 36 = 0 0 + x = -13.416407865 + 36 x = -13.416407865 + 36 Combine like terms: -13.416407865 + 36 = 22.583592135 x = 22.583592135 Simplifying x = 22.583592135

Solution

The solution to the problem is based on the solutions from the subproblems. x = {49.416407865, 22.583592135}

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