2x^2+36x=252

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Solution for 2x^2+36x=252 equation:


Simplifying
2x2 + 36x = 252

Reorder the terms:
36x + 2x2 = 252

Solving
36x + 2x2 = 252

Solving for variable 'x'.

Reorder the terms:
-252 + 36x + 2x2 = 252 + -252

Combine like terms: 252 + -252 = 0
-252 + 36x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-126 + 18x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-126 + 18x + x2)' equal to zero and attempt to solve: Simplifying -126 + 18x + x2 = 0 Solving -126 + 18x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '126' to each side of the equation. -126 + 18x + 126 + x2 = 0 + 126 Reorder the terms: -126 + 126 + 18x + x2 = 0 + 126 Combine like terms: -126 + 126 = 0 0 + 18x + x2 = 0 + 126 18x + x2 = 0 + 126 Combine like terms: 0 + 126 = 126 18x + x2 = 126 The x term is 18x. Take half its coefficient (9). Square it (81) and add it to both sides. Add '81' to each side of the equation. 18x + 81 + x2 = 126 + 81 Reorder the terms: 81 + 18x + x2 = 126 + 81 Combine like terms: 126 + 81 = 207 81 + 18x + x2 = 207 Factor a perfect square on the left side: (x + 9)(x + 9) = 207 Calculate the square root of the right side: 14.38749457 Break this problem into two subproblems by setting (x + 9) equal to 14.38749457 and -14.38749457.

Subproblem 1

x + 9 = 14.38749457 Simplifying x + 9 = 14.38749457 Reorder the terms: 9 + x = 14.38749457 Solving 9 + x = 14.38749457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 14.38749457 + -9 Combine like terms: 9 + -9 = 0 0 + x = 14.38749457 + -9 x = 14.38749457 + -9 Combine like terms: 14.38749457 + -9 = 5.38749457 x = 5.38749457 Simplifying x = 5.38749457

Subproblem 2

x + 9 = -14.38749457 Simplifying x + 9 = -14.38749457 Reorder the terms: 9 + x = -14.38749457 Solving 9 + x = -14.38749457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = -14.38749457 + -9 Combine like terms: 9 + -9 = 0 0 + x = -14.38749457 + -9 x = -14.38749457 + -9 Combine like terms: -14.38749457 + -9 = -23.38749457 x = -23.38749457 Simplifying x = -23.38749457

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.38749457, -23.38749457}

Solution

x = {5.38749457, -23.38749457}

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