x^2+18x=32

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Solution for x^2+18x=32 equation:


Simplifying
x2 + 18x = 32

Reorder the terms:
18x + x2 = 32

Solving
18x + x2 = 32

Solving for variable 'x'.

Reorder the terms:
-32 + 18x + x2 = 32 + -32

Combine like terms: 32 + -32 = 0
-32 + 18x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '32' to each side of the equation.
-32 + 18x + 32 + x2 = 0 + 32

Reorder the terms:
-32 + 32 + 18x + x2 = 0 + 32

Combine like terms: -32 + 32 = 0
0 + 18x + x2 = 0 + 32
18x + x2 = 0 + 32

Combine like terms: 0 + 32 = 32
18x + x2 = 32

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 = 32 + 81

Reorder the terms:
81 + 18x + x2 = 32 + 81

Combine like terms: 32 + 81 = 113
81 + 18x + x2 = 113

Factor a perfect square on the left side:
(x + 9)(x + 9) = 113

Calculate the square root of the right side: 10.630145813

Break this problem into two subproblems by setting 
(x + 9) equal to 10.630145813 and -10.630145813.

Subproblem 1

x + 9 = 10.630145813 Simplifying x + 9 = 10.630145813 Reorder the terms: 9 + x = 10.630145813 Solving 9 + x = 10.630145813 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 = 10.630145813 + -9 Combine like terms: 9 + -9 = 0 0 + x = 10.630145813 + -9 x = 10.630145813 + -9 Combine like terms: 10.630145813 + -9 = 1.630145813 x = 1.630145813 Simplifying x = 1.630145813

Subproblem 2

x + 9 = -10.630145813 Simplifying x + 9 = -10.630145813 Reorder the terms: 9 + x = -10.630145813 Solving 9 + x = -10.630145813 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 = -10.630145813 + -9 Combine like terms: 9 + -9 = 0 0 + x = -10.630145813 + -9 x = -10.630145813 + -9 Combine like terms: -10.630145813 + -9 = -19.630145813 x = -19.630145813 Simplifying x = -19.630145813

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.630145813, -19.630145813}

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