x^2+10x-208=0

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Solution for x^2+10x-208=0 equation:


Simplifying
x2 + 10x + -208 = 0

Reorder the terms:
-208 + 10x + x2 = 0

Solving
-208 + 10x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '208' to each side of the equation.
-208 + 10x + 208 + x2 = 0 + 208

Reorder the terms:
-208 + 208 + 10x + x2 = 0 + 208

Combine like terms: -208 + 208 = 0
0 + 10x + x2 = 0 + 208
10x + x2 = 0 + 208

Combine like terms: 0 + 208 = 208
10x + x2 = 208

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 208 + 25

Reorder the terms:
25 + 10x + x2 = 208 + 25

Combine like terms: 208 + 25 = 233
25 + 10x + x2 = 233

Factor a perfect square on the left side:
(x + 5)(x + 5) = 233

Calculate the square root of the right side: 15.264337522

Break this problem into two subproblems by setting 
(x + 5) equal to 15.264337522 and -15.264337522.

Subproblem 1

x + 5 = 15.264337522 Simplifying x + 5 = 15.264337522 Reorder the terms: 5 + x = 15.264337522 Solving 5 + x = 15.264337522 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 15.264337522 + -5 Combine like terms: 5 + -5 = 0 0 + x = 15.264337522 + -5 x = 15.264337522 + -5 Combine like terms: 15.264337522 + -5 = 10.264337522 x = 10.264337522 Simplifying x = 10.264337522

Subproblem 2

x + 5 = -15.264337522 Simplifying x + 5 = -15.264337522 Reorder the terms: 5 + x = -15.264337522 Solving 5 + x = -15.264337522 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -15.264337522 + -5 Combine like terms: 5 + -5 = 0 0 + x = -15.264337522 + -5 x = -15.264337522 + -5 Combine like terms: -15.264337522 + -5 = -20.264337522 x = -20.264337522 Simplifying x = -20.264337522

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.264337522, -20.264337522}

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