x^2+25x=5

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Solution for x^2+25x=5 equation:


Simplifying
x2 + 25x = 5

Reorder the terms:
25x + x2 = 5

Solving
25x + x2 = 5

Solving for variable 'x'.

Reorder the terms:
-5 + 25x + x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + 25x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + 25x + 5 + x2 = 0 + 5

Reorder the terms:
-5 + 5 + 25x + x2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + 25x + x2 = 0 + 5
25x + x2 = 0 + 5

Combine like terms: 0 + 5 = 5
25x + x2 = 5

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 = 5 + 156.25

Reorder the terms:
156.25 + 25x + x2 = 5 + 156.25

Combine like terms: 5 + 156.25 = 161.25
156.25 + 25x + x2 = 161.25

Factor a perfect square on the left side:
(x + 12.5)(x + 12.5) = 161.25

Calculate the square root of the right side: 12.698425099

Break this problem into two subproblems by setting 
(x + 12.5) equal to 12.698425099 and -12.698425099.

Subproblem 1

x + 12.5 = 12.698425099 Simplifying x + 12.5 = 12.698425099 Reorder the terms: 12.5 + x = 12.698425099 Solving 12.5 + x = 12.698425099 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 = 12.698425099 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = 12.698425099 + -12.5 x = 12.698425099 + -12.5 Combine like terms: 12.698425099 + -12.5 = 0.198425099 x = 0.198425099 Simplifying x = 0.198425099

Subproblem 2

x + 12.5 = -12.698425099 Simplifying x + 12.5 = -12.698425099 Reorder the terms: 12.5 + x = -12.698425099 Solving 12.5 + x = -12.698425099 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 = -12.698425099 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = -12.698425099 + -12.5 x = -12.698425099 + -12.5 Combine like terms: -12.698425099 + -12.5 = -25.198425099 x = -25.198425099 Simplifying x = -25.198425099

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.198425099, -25.198425099}

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