4x^2+26x+25=0

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Solution for 4x^2+26x+25=0 equation:


Simplifying
4x2 + 26x + 25 = 0

Reorder the terms:
25 + 26x + 4x2 = 0

Solving
25 + 26x + 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 + 6.5x + x2 = 0

Move the constant term to the right:

Add '-6.25' to each side of the equation.
6.25 + 6.5x + -6.25 + x2 = 0 + -6.25

Reorder the terms:
6.25 + -6.25 + 6.5x + x2 = 0 + -6.25

Combine like terms: 6.25 + -6.25 = 0.00
0.00 + 6.5x + x2 = 0 + -6.25
6.5x + x2 = 0 + -6.25

Combine like terms: 0 + -6.25 = -6.25
6.5x + x2 = -6.25

The x term is 6.5x.  Take half its coefficient (3.25).
Square it (10.5625) and add it to both sides.

Add '10.5625' to each side of the equation.
6.5x + 10.5625 + x2 = -6.25 + 10.5625

Reorder the terms:
10.5625 + 6.5x + x2 = -6.25 + 10.5625

Combine like terms: -6.25 + 10.5625 = 4.3125
10.5625 + 6.5x + x2 = 4.3125

Factor a perfect square on the left side:
(x + 3.25)(x + 3.25) = 4.3125

Calculate the square root of the right side: 2.076655966

Break this problem into two subproblems by setting 
(x + 3.25) equal to 2.076655966 and -2.076655966.

Subproblem 1

x + 3.25 = 2.076655966 Simplifying x + 3.25 = 2.076655966 Reorder the terms: 3.25 + x = 2.076655966 Solving 3.25 + x = 2.076655966 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.25' to each side of the equation. 3.25 + -3.25 + x = 2.076655966 + -3.25 Combine like terms: 3.25 + -3.25 = 0.00 0.00 + x = 2.076655966 + -3.25 x = 2.076655966 + -3.25 Combine like terms: 2.076655966 + -3.25 = -1.173344034 x = -1.173344034 Simplifying x = -1.173344034

Subproblem 2

x + 3.25 = -2.076655966 Simplifying x + 3.25 = -2.076655966 Reorder the terms: 3.25 + x = -2.076655966 Solving 3.25 + x = -2.076655966 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.25' to each side of the equation. 3.25 + -3.25 + x = -2.076655966 + -3.25 Combine like terms: 3.25 + -3.25 = 0.00 0.00 + x = -2.076655966 + -3.25 x = -2.076655966 + -3.25 Combine like terms: -2.076655966 + -3.25 = -5.326655966 x = -5.326655966 Simplifying x = -5.326655966

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.173344034, -5.326655966}

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