5x^2+25x+4=2

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Solution for 5x^2+25x+4=2 equation:


Simplifying
5x2 + 25x + 4 = 2

Reorder the terms:
4 + 25x + 5x2 = 2

Solving
4 + 25x + 5x2 = 2

Solving for variable 'x'.

Reorder the terms:
4 + -2 + 25x + 5x2 = 2 + -2

Combine like terms: 4 + -2 = 2
2 + 25x + 5x2 = 2 + -2

Combine like terms: 2 + -2 = 0
2 + 25x + 5x2 = 0

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

Divide each side by '5'.
0.4 + 5x + x2 = 0

Move the constant term to the right:

Add '-0.4' to each side of the equation.
0.4 + 5x + -0.4 + x2 = 0 + -0.4

Reorder the terms:
0.4 + -0.4 + 5x + x2 = 0 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 5x + x2 = 0 + -0.4
5x + x2 = 0 + -0.4

Combine like terms: 0 + -0.4 = -0.4
5x + x2 = -0.4

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 = -0.4 + 6.25

Reorder the terms:
6.25 + 5x + x2 = -0.4 + 6.25

Combine like terms: -0.4 + 6.25 = 5.85
6.25 + 5x + x2 = 5.85

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 5.85

Calculate the square root of the right side: 2.418677324

Break this problem into two subproblems by setting 
(x + 2.5) equal to 2.418677324 and -2.418677324.

Subproblem 1

x + 2.5 = 2.418677324 Simplifying x + 2.5 = 2.418677324 Reorder the terms: 2.5 + x = 2.418677324 Solving 2.5 + x = 2.418677324 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 = 2.418677324 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 2.418677324 + -2.5 x = 2.418677324 + -2.5 Combine like terms: 2.418677324 + -2.5 = -0.081322676 x = -0.081322676 Simplifying x = -0.081322676

Subproblem 2

x + 2.5 = -2.418677324 Simplifying x + 2.5 = -2.418677324 Reorder the terms: 2.5 + x = -2.418677324 Solving 2.5 + x = -2.418677324 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 = -2.418677324 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -2.418677324 + -2.5 x = -2.418677324 + -2.5 Combine like terms: -2.418677324 + -2.5 = -4.918677324 x = -4.918677324 Simplifying x = -4.918677324

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.081322676, -4.918677324}

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