5x^2+x+25x+25=0

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Solution for 5x^2+x+25x+25=0 equation:


Simplifying
5x2 + x + 25x + 25 = 0

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

Combine like terms: x + 25x = 26x
25 + 26x + 5x2 = 0

Solving
25 + 26x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
5 + 5.2x + x2 = 0

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + 5.2x + -5 + x2 = 0 + -5

Reorder the terms:
5 + -5 + 5.2x + x2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 5.2x + x2 = 0 + -5
5.2x + x2 = 0 + -5

Combine like terms: 0 + -5 = -5
5.2x + x2 = -5

The x term is 5.2x.  Take half its coefficient (2.6).
Square it (6.76) and add it to both sides.

Add '6.76' to each side of the equation.
5.2x + 6.76 + x2 = -5 + 6.76

Reorder the terms:
6.76 + 5.2x + x2 = -5 + 6.76

Combine like terms: -5 + 6.76 = 1.76
6.76 + 5.2x + x2 = 1.76

Factor a perfect square on the left side:
(x + 2.6)(x + 2.6) = 1.76

Calculate the square root of the right side: 1.326649916

Break this problem into two subproblems by setting 
(x + 2.6) equal to 1.326649916 and -1.326649916.

Subproblem 1

x + 2.6 = 1.326649916 Simplifying x + 2.6 = 1.326649916 Reorder the terms: 2.6 + x = 1.326649916 Solving 2.6 + x = 1.326649916 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.6' to each side of the equation. 2.6 + -2.6 + x = 1.326649916 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + x = 1.326649916 + -2.6 x = 1.326649916 + -2.6 Combine like terms: 1.326649916 + -2.6 = -1.273350084 x = -1.273350084 Simplifying x = -1.273350084

Subproblem 2

x + 2.6 = -1.326649916 Simplifying x + 2.6 = -1.326649916 Reorder the terms: 2.6 + x = -1.326649916 Solving 2.6 + x = -1.326649916 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.6' to each side of the equation. 2.6 + -2.6 + x = -1.326649916 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + x = -1.326649916 + -2.6 x = -1.326649916 + -2.6 Combine like terms: -1.326649916 + -2.6 = -3.926649916 x = -3.926649916 Simplifying x = -3.926649916

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.273350084, -3.926649916}

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