x^2+18x=44

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Solution for x^2+18x=44 equation:


Simplifying
x2 + 18x = 44

Reorder the terms:
18x + x2 = 44

Solving
18x + x2 = 44

Solving for variable 'x'.

Reorder the terms:
-44 + 18x + x2 = 44 + -44

Combine like terms: 44 + -44 = 0
-44 + 18x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '44' to each side of the equation.
-44 + 18x + 44 + x2 = 0 + 44

Reorder the terms:
-44 + 44 + 18x + x2 = 0 + 44

Combine like terms: -44 + 44 = 0
0 + 18x + x2 = 0 + 44
18x + x2 = 0 + 44

Combine like terms: 0 + 44 = 44
18x + x2 = 44

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 = 44 + 81

Reorder the terms:
81 + 18x + x2 = 44 + 81

Combine like terms: 44 + 81 = 125
81 + 18x + x2 = 125

Factor a perfect square on the left side:
(x + 9)(x + 9) = 125

Calculate the square root of the right side: 11.180339887

Break this problem into two subproblems by setting 
(x + 9) equal to 11.180339887 and -11.180339887.

Subproblem 1

x + 9 = 11.180339887 Simplifying x + 9 = 11.180339887 Reorder the terms: 9 + x = 11.180339887 Solving 9 + x = 11.180339887 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 = 11.180339887 + -9 Combine like terms: 9 + -9 = 0 0 + x = 11.180339887 + -9 x = 11.180339887 + -9 Combine like terms: 11.180339887 + -9 = 2.180339887 x = 2.180339887 Simplifying x = 2.180339887

Subproblem 2

x + 9 = -11.180339887 Simplifying x + 9 = -11.180339887 Reorder the terms: 9 + x = -11.180339887 Solving 9 + x = -11.180339887 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 = -11.180339887 + -9 Combine like terms: 9 + -9 = 0 0 + x = -11.180339887 + -9 x = -11.180339887 + -9 Combine like terms: -11.180339887 + -9 = -20.180339887 x = -20.180339887 Simplifying x = -20.180339887

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.180339887, -20.180339887}

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