5a*5a+13a=6

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Solution for 5a*5a+13a=6 equation:


Simplifying
5a * 5a + 13a = 6

Reorder the terms for easier multiplication:
5 * 5a * a + 13a = 6

Multiply 5 * 5
25a * a + 13a = 6

Multiply a * a
25a2 + 13a = 6

Reorder the terms:
13a + 25a2 = 6

Solving
13a + 25a2 = 6

Solving for variable 'a'.

Reorder the terms:
-6 + 13a + 25a2 = 6 + -6

Combine like terms: 6 + -6 = 0
-6 + 13a + 25a2 = 0

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

Divide each side by '25'.
-0.24 + 0.52a + a2 = 0

Move the constant term to the right:

Add '0.24' to each side of the equation.
-0.24 + 0.52a + 0.24 + a2 = 0 + 0.24

Reorder the terms:
-0.24 + 0.24 + 0.52a + a2 = 0 + 0.24

Combine like terms: -0.24 + 0.24 = 0.00
0.00 + 0.52a + a2 = 0 + 0.24
0.52a + a2 = 0 + 0.24

Combine like terms: 0 + 0.24 = 0.24
0.52a + a2 = 0.24

The a term is 0.52a.  Take half its coefficient (0.26).
Square it (0.0676) and add it to both sides.

Add '0.0676' to each side of the equation.
0.52a + 0.0676 + a2 = 0.24 + 0.0676

Reorder the terms:
0.0676 + 0.52a + a2 = 0.24 + 0.0676

Combine like terms: 0.24 + 0.0676 = 0.3076
0.0676 + 0.52a + a2 = 0.3076

Factor a perfect square on the left side:
(a + 0.26)(a + 0.26) = 0.3076

Calculate the square root of the right side: 0.554616985

Break this problem into two subproblems by setting 
(a + 0.26) equal to 0.554616985 and -0.554616985.

Subproblem 1

a + 0.26 = 0.554616985 Simplifying a + 0.26 = 0.554616985 Reorder the terms: 0.26 + a = 0.554616985 Solving 0.26 + a = 0.554616985 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-0.26' to each side of the equation. 0.26 + -0.26 + a = 0.554616985 + -0.26 Combine like terms: 0.26 + -0.26 = 0.00 0.00 + a = 0.554616985 + -0.26 a = 0.554616985 + -0.26 Combine like terms: 0.554616985 + -0.26 = 0.294616985 a = 0.294616985 Simplifying a = 0.294616985

Subproblem 2

a + 0.26 = -0.554616985 Simplifying a + 0.26 = -0.554616985 Reorder the terms: 0.26 + a = -0.554616985 Solving 0.26 + a = -0.554616985 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-0.26' to each side of the equation. 0.26 + -0.26 + a = -0.554616985 + -0.26 Combine like terms: 0.26 + -0.26 = 0.00 0.00 + a = -0.554616985 + -0.26 a = -0.554616985 + -0.26 Combine like terms: -0.554616985 + -0.26 = -0.814616985 a = -0.814616985 Simplifying a = -0.814616985

Solution

The solution to the problem is based on the solutions from the subproblems. a = {0.294616985, -0.814616985}

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