510-2x=x^2

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Solution for 510-2x=x^2 equation:


Simplifying
510 + -2x = x2

Solving
510 + -2x = x2

Solving for variable 'x'.

Combine like terms: x2 + -1x2 = 0
510 + -2x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-510 + 2x + x2 = 0

Move the constant term to the right:

Add '510' to each side of the equation.
-510 + 2x + 510 + x2 = 0 + 510

Reorder the terms:
-510 + 510 + 2x + x2 = 0 + 510

Combine like terms: -510 + 510 = 0
0 + 2x + x2 = 0 + 510
2x + x2 = 0 + 510

Combine like terms: 0 + 510 = 510
2x + x2 = 510

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 = 510 + 1

Reorder the terms:
1 + 2x + x2 = 510 + 1

Combine like terms: 510 + 1 = 511
1 + 2x + x2 = 511

Factor a perfect square on the left side:
(x + 1)(x + 1) = 511

Calculate the square root of the right side: 22.605309111

Break this problem into two subproblems by setting 
(x + 1) equal to 22.605309111 and -22.605309111.

Subproblem 1

x + 1 = 22.605309111 Simplifying x + 1 = 22.605309111 Reorder the terms: 1 + x = 22.605309111 Solving 1 + x = 22.605309111 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 = 22.605309111 + -1 Combine like terms: 1 + -1 = 0 0 + x = 22.605309111 + -1 x = 22.605309111 + -1 Combine like terms: 22.605309111 + -1 = 21.605309111 x = 21.605309111 Simplifying x = 21.605309111

Subproblem 2

x + 1 = -22.605309111 Simplifying x + 1 = -22.605309111 Reorder the terms: 1 + x = -22.605309111 Solving 1 + x = -22.605309111 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 = -22.605309111 + -1 Combine like terms: 1 + -1 = 0 0 + x = -22.605309111 + -1 x = -22.605309111 + -1 Combine like terms: -22.605309111 + -1 = -23.605309111 x = -23.605309111 Simplifying x = -23.605309111

Solution

The solution to the problem is based on the solutions from the subproblems. x = {21.605309111, -23.605309111}

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