x^2+22x=520

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Solution for x^2+22x=520 equation:


Simplifying
x2 + 22x = 520

Reorder the terms:
22x + x2 = 520

Solving
22x + x2 = 520

Solving for variable 'x'.

Reorder the terms:
-520 + 22x + x2 = 520 + -520

Combine like terms: 520 + -520 = 0
-520 + 22x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '520' to each side of the equation.
-520 + 22x + 520 + x2 = 0 + 520

Reorder the terms:
-520 + 520 + 22x + x2 = 0 + 520

Combine like terms: -520 + 520 = 0
0 + 22x + x2 = 0 + 520
22x + x2 = 0 + 520

Combine like terms: 0 + 520 = 520
22x + x2 = 520

The x term is 22x.  Take half its coefficient (11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
22x + 121 + x2 = 520 + 121

Reorder the terms:
121 + 22x + x2 = 520 + 121

Combine like terms: 520 + 121 = 641
121 + 22x + x2 = 641

Factor a perfect square on the left side:
(x + 11)(x + 11) = 641

Calculate the square root of the right side: 25.317977802

Break this problem into two subproblems by setting 
(x + 11) equal to 25.317977802 and -25.317977802.

Subproblem 1

x + 11 = 25.317977802 Simplifying x + 11 = 25.317977802 Reorder the terms: 11 + x = 25.317977802 Solving 11 + x = 25.317977802 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = 25.317977802 + -11 Combine like terms: 11 + -11 = 0 0 + x = 25.317977802 + -11 x = 25.317977802 + -11 Combine like terms: 25.317977802 + -11 = 14.317977802 x = 14.317977802 Simplifying x = 14.317977802

Subproblem 2

x + 11 = -25.317977802 Simplifying x + 11 = -25.317977802 Reorder the terms: 11 + x = -25.317977802 Solving 11 + x = -25.317977802 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = -25.317977802 + -11 Combine like terms: 11 + -11 = 0 0 + x = -25.317977802 + -11 x = -25.317977802 + -11 Combine like terms: -25.317977802 + -11 = -36.317977802 x = -36.317977802 Simplifying x = -36.317977802

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.317977802, -36.317977802}

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