x(x+25)=323

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Solution for x(x+25)=323 equation:


Simplifying
x(x + 25) = 323

Reorder the terms:
x(25 + x) = 323
(25 * x + x * x) = 323
(25x + x2) = 323

Solving
25x + x2 = 323

Solving for variable 'x'.

Reorder the terms:
-323 + 25x + x2 = 323 + -323

Combine like terms: 323 + -323 = 0
-323 + 25x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '323' to each side of the equation.
-323 + 25x + 323 + x2 = 0 + 323

Reorder the terms:
-323 + 323 + 25x + x2 = 0 + 323

Combine like terms: -323 + 323 = 0
0 + 25x + x2 = 0 + 323
25x + x2 = 0 + 323

Combine like terms: 0 + 323 = 323
25x + x2 = 323

The x term is 25x.  Take half its coefficient (12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
25x + 156.25 + x2 = 323 + 156.25

Reorder the terms:
156.25 + 25x + x2 = 323 + 156.25

Combine like terms: 323 + 156.25 = 479.25
156.25 + 25x + x2 = 479.25

Factor a perfect square on the left side:
(x + 12.5)(x + 12.5) = 479.25

Calculate the square root of the right side: 21.891779279

Break this problem into two subproblems by setting 
(x + 12.5) equal to 21.891779279 and -21.891779279.

Subproblem 1

x + 12.5 = 21.891779279 Simplifying x + 12.5 = 21.891779279 Reorder the terms: 12.5 + x = 21.891779279 Solving 12.5 + x = 21.891779279 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = 21.891779279 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = 21.891779279 + -12.5 x = 21.891779279 + -12.5 Combine like terms: 21.891779279 + -12.5 = 9.391779279 x = 9.391779279 Simplifying x = 9.391779279

Subproblem 2

x + 12.5 = -21.891779279 Simplifying x + 12.5 = -21.891779279 Reorder the terms: 12.5 + x = -21.891779279 Solving 12.5 + x = -21.891779279 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = -21.891779279 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = -21.891779279 + -12.5 x = -21.891779279 + -12.5 Combine like terms: -21.891779279 + -12.5 = -34.391779279 x = -34.391779279 Simplifying x = -34.391779279

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.391779279, -34.391779279}

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