4x^2+23x+25=0

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Solution for 4x^2+23x+25=0 equation:


Simplifying
4x2 + 23x + 25 = 0

Reorder the terms:
25 + 23x + 4x2 = 0

Solving
25 + 23x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
6.25 + 5.75x + x2 = 0

Move the constant term to the right:

Add '-6.25' to each side of the equation.
6.25 + 5.75x + -6.25 + x2 = 0 + -6.25

Reorder the terms:
6.25 + -6.25 + 5.75x + x2 = 0 + -6.25

Combine like terms: 6.25 + -6.25 = 0.00
0.00 + 5.75x + x2 = 0 + -6.25
5.75x + x2 = 0 + -6.25

Combine like terms: 0 + -6.25 = -6.25
5.75x + x2 = -6.25

The x term is 5.75x.  Take half its coefficient (2.875).
Square it (8.265625) and add it to both sides.

Add '8.265625' to each side of the equation.
5.75x + 8.265625 + x2 = -6.25 + 8.265625

Reorder the terms:
8.265625 + 5.75x + x2 = -6.25 + 8.265625

Combine like terms: -6.25 + 8.265625 = 2.015625
8.265625 + 5.75x + x2 = 2.015625

Factor a perfect square on the left side:
(x + 2.875)(x + 2.875) = 2.015625

Calculate the square root of the right side: 1.419727086

Break this problem into two subproblems by setting 
(x + 2.875) equal to 1.419727086 and -1.419727086.

Subproblem 1

x + 2.875 = 1.419727086 Simplifying x + 2.875 = 1.419727086 Reorder the terms: 2.875 + x = 1.419727086 Solving 2.875 + x = 1.419727086 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.875' to each side of the equation. 2.875 + -2.875 + x = 1.419727086 + -2.875 Combine like terms: 2.875 + -2.875 = 0.000 0.000 + x = 1.419727086 + -2.875 x = 1.419727086 + -2.875 Combine like terms: 1.419727086 + -2.875 = -1.455272914 x = -1.455272914 Simplifying x = -1.455272914

Subproblem 2

x + 2.875 = -1.419727086 Simplifying x + 2.875 = -1.419727086 Reorder the terms: 2.875 + x = -1.419727086 Solving 2.875 + x = -1.419727086 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.875' to each side of the equation. 2.875 + -2.875 + x = -1.419727086 + -2.875 Combine like terms: 2.875 + -2.875 = 0.000 0.000 + x = -1.419727086 + -2.875 x = -1.419727086 + -2.875 Combine like terms: -1.419727086 + -2.875 = -4.294727086 x = -4.294727086 Simplifying x = -4.294727086

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.455272914, -4.294727086}

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