(2x^2)+(10x)+1=0

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Solution for (2x^2)+(10x)+1=0 equation:


Simplifying
(2x2) + (10x) + 1 = 0

Reorder the terms:
1 + (10x) + (2x2) = 0

Solving
1 + (10x) + (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'.
0.5 + (5x) + x2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + (5x) + -0.5 + x2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + (5x) + x2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + (5x) + x2 = 0 + -0.5
(5x) + x2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
(5x) + x2 = -0.5

The x term is (5x).  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
(5x) + 6.25 + x2 = -0.5 + 6.25

Reorder the terms:
6.25 + (5x) + x2 = -0.5 + 6.25

Combine like terms: -0.5 + 6.25 = 5.75
6.25 + (5x) + x2 = 5.75

Factor a perfect square on the left side:
((x) + 2.5)((x) + 2.5) = 5.75

Calculate the square root of the right side: 2.397915762

Break this problem into two subproblems by setting 
((x) + 2.5) equal to 2.397915762 and -2.397915762.

Subproblem 1

(x) + 2.5 = 2.397915762 Simplifying (x) + 2.5 = 2.397915762 x + 2.5 = 2.397915762 Reorder the terms: 2.5 + x = 2.397915762 Solving 2.5 + x = 2.397915762 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 2.397915762 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 2.397915762 + -2.5 x = 2.397915762 + -2.5 Combine like terms: 2.397915762 + -2.5 = -0.102084238 x = -0.102084238 Simplifying x = -0.102084238

Subproblem 2

(x) + 2.5 = -2.397915762 Simplifying (x) + 2.5 = -2.397915762 x + 2.5 = -2.397915762 Reorder the terms: 2.5 + x = -2.397915762 Solving 2.5 + x = -2.397915762 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -2.397915762 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -2.397915762 + -2.5 x = -2.397915762 + -2.5 Combine like terms: -2.397915762 + -2.5 = -4.897915762 x = -4.897915762 Simplifying x = -4.897915762

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.102084238, -4.897915762}

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