236-15x+2x^2=360

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Solution for 236-15x+2x^2=360 equation:


Simplifying
236 + -15x + 2x2 = 360

Solving
236 + -15x + 2x2 = 360

Solving for variable 'x'.

Reorder the terms:
236 + -360 + -15x + 2x2 = 360 + -360

Combine like terms: 236 + -360 = -124
-124 + -15x + 2x2 = 360 + -360

Combine like terms: 360 + -360 = 0
-124 + -15x + 2x2 = 0

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

Divide each side by '2'.
-62 + -7.5x + x2 = 0

Move the constant term to the right:

Add '62' to each side of the equation.
-62 + -7.5x + 62 + x2 = 0 + 62

Reorder the terms:
-62 + 62 + -7.5x + x2 = 0 + 62

Combine like terms: -62 + 62 = 0
0 + -7.5x + x2 = 0 + 62
-7.5x + x2 = 0 + 62

Combine like terms: 0 + 62 = 62
-7.5x + x2 = 62

The x term is -7.5x.  Take half its coefficient (-3.75).
Square it (14.0625) and add it to both sides.

Add '14.0625' to each side of the equation.
-7.5x + 14.0625 + x2 = 62 + 14.0625

Reorder the terms:
14.0625 + -7.5x + x2 = 62 + 14.0625

Combine like terms: 62 + 14.0625 = 76.0625
14.0625 + -7.5x + x2 = 76.0625

Factor a perfect square on the left side:
(x + -3.75)(x + -3.75) = 76.0625

Calculate the square root of the right side: 8.721381771

Break this problem into two subproblems by setting 
(x + -3.75) equal to 8.721381771 and -8.721381771.

Subproblem 1

x + -3.75 = 8.721381771 Simplifying x + -3.75 = 8.721381771 Reorder the terms: -3.75 + x = 8.721381771 Solving -3.75 + x = 8.721381771 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.75' to each side of the equation. -3.75 + 3.75 + x = 8.721381771 + 3.75 Combine like terms: -3.75 + 3.75 = 0.00 0.00 + x = 8.721381771 + 3.75 x = 8.721381771 + 3.75 Combine like terms: 8.721381771 + 3.75 = 12.471381771 x = 12.471381771 Simplifying x = 12.471381771

Subproblem 2

x + -3.75 = -8.721381771 Simplifying x + -3.75 = -8.721381771 Reorder the terms: -3.75 + x = -8.721381771 Solving -3.75 + x = -8.721381771 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.75' to each side of the equation. -3.75 + 3.75 + x = -8.721381771 + 3.75 Combine like terms: -3.75 + 3.75 = 0.00 0.00 + x = -8.721381771 + 3.75 x = -8.721381771 + 3.75 Combine like terms: -8.721381771 + 3.75 = -4.971381771 x = -4.971381771 Simplifying x = -4.971381771

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.471381771, -4.971381771}

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