2x^2+50x+5=0

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Solution for 2x^2+50x+5=0 equation:


Simplifying
2x2 + 50x + 5 = 0

Reorder the terms:
5 + 50x + 2x2 = 0

Solving
5 + 50x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
2.5 + 25x + x2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + 25x + -2.5 + x2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + 25x + x2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + 25x + x2 = 0 + -2.5
25x + x2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
25x + x2 = -2.5

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 = -2.5 + 156.25

Reorder the terms:
156.25 + 25x + x2 = -2.5 + 156.25

Combine like terms: -2.5 + 156.25 = 153.75
156.25 + 25x + x2 = 153.75

Factor a perfect square on the left side:
(x + 12.5)(x + 12.5) = 153.75

Calculate the square root of the right side: 12.399596768

Break this problem into two subproblems by setting 
(x + 12.5) equal to 12.399596768 and -12.399596768.

Subproblem 1

x + 12.5 = 12.399596768 Simplifying x + 12.5 = 12.399596768 Reorder the terms: 12.5 + x = 12.399596768 Solving 12.5 + x = 12.399596768 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 = 12.399596768 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = 12.399596768 + -12.5 x = 12.399596768 + -12.5 Combine like terms: 12.399596768 + -12.5 = -0.100403232 x = -0.100403232 Simplifying x = -0.100403232

Subproblem 2

x + 12.5 = -12.399596768 Simplifying x + 12.5 = -12.399596768 Reorder the terms: 12.5 + x = -12.399596768 Solving 12.5 + x = -12.399596768 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 = -12.399596768 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = -12.399596768 + -12.5 x = -12.399596768 + -12.5 Combine like terms: -12.399596768 + -12.5 = -24.899596768 x = -24.899596768 Simplifying x = -24.899596768

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.100403232, -24.899596768}

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