a^2+12a-94=0

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Solution for a^2+12a-94=0 equation:


Simplifying
a2 + 12a + -94 = 0

Reorder the terms:
-94 + 12a + a2 = 0

Solving
-94 + 12a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '94' to each side of the equation.
-94 + 12a + 94 + a2 = 0 + 94

Reorder the terms:
-94 + 94 + 12a + a2 = 0 + 94

Combine like terms: -94 + 94 = 0
0 + 12a + a2 = 0 + 94
12a + a2 = 0 + 94

Combine like terms: 0 + 94 = 94
12a + a2 = 94

The a term is 12a.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12a + 36 + a2 = 94 + 36

Reorder the terms:
36 + 12a + a2 = 94 + 36

Combine like terms: 94 + 36 = 130
36 + 12a + a2 = 130

Factor a perfect square on the left side:
(a + 6)(a + 6) = 130

Calculate the square root of the right side: 11.401754251

Break this problem into two subproblems by setting 
(a + 6) equal to 11.401754251 and -11.401754251.

Subproblem 1

a + 6 = 11.401754251 Simplifying a + 6 = 11.401754251 Reorder the terms: 6 + a = 11.401754251 Solving 6 + a = 11.401754251 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + a = 11.401754251 + -6 Combine like terms: 6 + -6 = 0 0 + a = 11.401754251 + -6 a = 11.401754251 + -6 Combine like terms: 11.401754251 + -6 = 5.401754251 a = 5.401754251 Simplifying a = 5.401754251

Subproblem 2

a + 6 = -11.401754251 Simplifying a + 6 = -11.401754251 Reorder the terms: 6 + a = -11.401754251 Solving 6 + a = -11.401754251 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + a = -11.401754251 + -6 Combine like terms: 6 + -6 = 0 0 + a = -11.401754251 + -6 a = -11.401754251 + -6 Combine like terms: -11.401754251 + -6 = -17.401754251 a = -17.401754251 Simplifying a = -17.401754251

Solution

The solution to the problem is based on the solutions from the subproblems. a = {5.401754251, -17.401754251}

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