x^2+2x-1+x^2-324=x^2

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Solution for x^2+2x-1+x^2-324=x^2 equation:


Simplifying
x2 + 2x + -1 + x2 + -324 = x2

Reorder the terms:
-1 + -324 + 2x + x2 + x2 = x2

Combine like terms: -1 + -324 = -325
-325 + 2x + x2 + x2 = x2

Combine like terms: x2 + x2 = 2x2
-325 + 2x + 2x2 = x2

Solving
-325 + 2x + 2x2 = x2

Solving for variable 'x'.

Combine like terms: 2x2 + -1x2 = 1x2
-325 + 2x + 1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-325 + 2x + 1x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '325' to each side of the equation.
-325 + 2x + 325 + x2 = 0 + 325

Reorder the terms:
-325 + 325 + 2x + x2 = 0 + 325

Combine like terms: -325 + 325 = 0
0 + 2x + x2 = 0 + 325
2x + x2 = 0 + 325

Combine like terms: 0 + 325 = 325
2x + x2 = 325

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 325 + 1

Reorder the terms:
1 + 2x + x2 = 325 + 1

Combine like terms: 325 + 1 = 326
1 + 2x + x2 = 326

Factor a perfect square on the left side:
(x + 1)(x + 1) = 326

Calculate the square root of the right side: 18.055470085

Break this problem into two subproblems by setting 
(x + 1) equal to 18.055470085 and -18.055470085.

Subproblem 1

x + 1 = 18.055470085 Simplifying x + 1 = 18.055470085 Reorder the terms: 1 + x = 18.055470085 Solving 1 + x = 18.055470085 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 18.055470085 + -1 Combine like terms: 1 + -1 = 0 0 + x = 18.055470085 + -1 x = 18.055470085 + -1 Combine like terms: 18.055470085 + -1 = 17.055470085 x = 17.055470085 Simplifying x = 17.055470085

Subproblem 2

x + 1 = -18.055470085 Simplifying x + 1 = -18.055470085 Reorder the terms: 1 + x = -18.055470085 Solving 1 + x = -18.055470085 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -18.055470085 + -1 Combine like terms: 1 + -1 = 0 0 + x = -18.055470085 + -1 x = -18.055470085 + -1 Combine like terms: -18.055470085 + -1 = -19.055470085 x = -19.055470085 Simplifying x = -19.055470085

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.055470085, -19.055470085}

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