5a^2=26a+14

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Solution for 5a^2=26a+14 equation:


Simplifying
5a2 = 26a + 14

Reorder the terms:
5a2 = 14 + 26a

Solving
5a2 = 14 + 26a

Solving for variable 'a'.

Reorder the terms:
-14 + -26a + 5a2 = 14 + 26a + -14 + -26a

Reorder the terms:
-14 + -26a + 5a2 = 14 + -14 + 26a + -26a

Combine like terms: 14 + -14 = 0
-14 + -26a + 5a2 = 0 + 26a + -26a
-14 + -26a + 5a2 = 26a + -26a

Combine like terms: 26a + -26a = 0
-14 + -26a + 5a2 = 0

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

Divide each side by '5'.
-2.8 + -5.2a + a2 = 0

Move the constant term to the right:

Add '2.8' to each side of the equation.
-2.8 + -5.2a + 2.8 + a2 = 0 + 2.8

Reorder the terms:
-2.8 + 2.8 + -5.2a + a2 = 0 + 2.8

Combine like terms: -2.8 + 2.8 = 0.0
0.0 + -5.2a + a2 = 0 + 2.8
-5.2a + a2 = 0 + 2.8

Combine like terms: 0 + 2.8 = 2.8
-5.2a + a2 = 2.8

The a term is -5.2a.  Take half its coefficient (-2.6).
Square it (6.76) and add it to both sides.

Add '6.76' to each side of the equation.
-5.2a + 6.76 + a2 = 2.8 + 6.76

Reorder the terms:
6.76 + -5.2a + a2 = 2.8 + 6.76

Combine like terms: 2.8 + 6.76 = 9.56
6.76 + -5.2a + a2 = 9.56

Factor a perfect square on the left side:
(a + -2.6)(a + -2.6) = 9.56

Calculate the square root of the right side: 3.091924967

Break this problem into two subproblems by setting 
(a + -2.6) equal to 3.091924967 and -3.091924967.

Subproblem 1

a + -2.6 = 3.091924967 Simplifying a + -2.6 = 3.091924967 Reorder the terms: -2.6 + a = 3.091924967 Solving -2.6 + a = 3.091924967 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '2.6' to each side of the equation. -2.6 + 2.6 + a = 3.091924967 + 2.6 Combine like terms: -2.6 + 2.6 = 0.0 0.0 + a = 3.091924967 + 2.6 a = 3.091924967 + 2.6 Combine like terms: 3.091924967 + 2.6 = 5.691924967 a = 5.691924967 Simplifying a = 5.691924967

Subproblem 2

a + -2.6 = -3.091924967 Simplifying a + -2.6 = -3.091924967 Reorder the terms: -2.6 + a = -3.091924967 Solving -2.6 + a = -3.091924967 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '2.6' to each side of the equation. -2.6 + 2.6 + a = -3.091924967 + 2.6 Combine like terms: -2.6 + 2.6 = 0.0 0.0 + a = -3.091924967 + 2.6 a = -3.091924967 + 2.6 Combine like terms: -3.091924967 + 2.6 = -0.491924967 a = -0.491924967 Simplifying a = -0.491924967

Solution

The solution to the problem is based on the solutions from the subproblems. a = {5.691924967, -0.491924967}

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