x^2+16x=234

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Solution for x^2+16x=234 equation:


Simplifying
x2 + 16x = 234

Reorder the terms:
16x + x2 = 234

Solving
16x + x2 = 234

Solving for variable 'x'.

Reorder the terms:
-234 + 16x + x2 = 234 + -234

Combine like terms: 234 + -234 = 0
-234 + 16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '234' to each side of the equation.
-234 + 16x + 234 + x2 = 0 + 234

Reorder the terms:
-234 + 234 + 16x + x2 = 0 + 234

Combine like terms: -234 + 234 = 0
0 + 16x + x2 = 0 + 234
16x + x2 = 0 + 234

Combine like terms: 0 + 234 = 234
16x + x2 = 234

The x term is 16x.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16x + 64 + x2 = 234 + 64

Reorder the terms:
64 + 16x + x2 = 234 + 64

Combine like terms: 234 + 64 = 298
64 + 16x + x2 = 298

Factor a perfect square on the left side:
(x + 8)(x + 8) = 298

Calculate the square root of the right side: 17.262676502

Break this problem into two subproblems by setting 
(x + 8) equal to 17.262676502 and -17.262676502.

Subproblem 1

x + 8 = 17.262676502 Simplifying x + 8 = 17.262676502 Reorder the terms: 8 + x = 17.262676502 Solving 8 + x = 17.262676502 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 17.262676502 + -8 Combine like terms: 8 + -8 = 0 0 + x = 17.262676502 + -8 x = 17.262676502 + -8 Combine like terms: 17.262676502 + -8 = 9.262676502 x = 9.262676502 Simplifying x = 9.262676502

Subproblem 2

x + 8 = -17.262676502 Simplifying x + 8 = -17.262676502 Reorder the terms: 8 + x = -17.262676502 Solving 8 + x = -17.262676502 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = -17.262676502 + -8 Combine like terms: 8 + -8 = 0 0 + x = -17.262676502 + -8 x = -17.262676502 + -8 Combine like terms: -17.262676502 + -8 = -25.262676502 x = -25.262676502 Simplifying x = -25.262676502

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.262676502, -25.262676502}

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