a^2+6a-59=0

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Solution for a^2+6a-59=0 equation:


Simplifying
a2 + 6a + -59 = 0

Reorder the terms:
-59 + 6a + a2 = 0

Solving
-59 + 6a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '59' to each side of the equation.
-59 + 6a + 59 + a2 = 0 + 59

Reorder the terms:
-59 + 59 + 6a + a2 = 0 + 59

Combine like terms: -59 + 59 = 0
0 + 6a + a2 = 0 + 59
6a + a2 = 0 + 59

Combine like terms: 0 + 59 = 59
6a + a2 = 59

The a term is 6a.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6a + 9 + a2 = 59 + 9

Reorder the terms:
9 + 6a + a2 = 59 + 9

Combine like terms: 59 + 9 = 68
9 + 6a + a2 = 68

Factor a perfect square on the left side:
(a + 3)(a + 3) = 68

Calculate the square root of the right side: 8.246211251

Break this problem into two subproblems by setting 
(a + 3) equal to 8.246211251 and -8.246211251.

Subproblem 1

a + 3 = 8.246211251 Simplifying a + 3 = 8.246211251 Reorder the terms: 3 + a = 8.246211251 Solving 3 + a = 8.246211251 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + a = 8.246211251 + -3 Combine like terms: 3 + -3 = 0 0 + a = 8.246211251 + -3 a = 8.246211251 + -3 Combine like terms: 8.246211251 + -3 = 5.246211251 a = 5.246211251 Simplifying a = 5.246211251

Subproblem 2

a + 3 = -8.246211251 Simplifying a + 3 = -8.246211251 Reorder the terms: 3 + a = -8.246211251 Solving 3 + a = -8.246211251 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + a = -8.246211251 + -3 Combine like terms: 3 + -3 = 0 0 + a = -8.246211251 + -3 a = -8.246211251 + -3 Combine like terms: -8.246211251 + -3 = -11.246211251 a = -11.246211251 Simplifying a = -11.246211251

Solution

The solution to the problem is based on the solutions from the subproblems. a = {5.246211251, -11.246211251}

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