t^2+12t+13=0

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Solution for t^2+12t+13=0 equation:


Simplifying
t2 + 12t + 13 = 0

Reorder the terms:
13 + 12t + t2 = 0

Solving
13 + 12t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '-13' to each side of the equation.
13 + 12t + -13 + t2 = 0 + -13

Reorder the terms:
13 + -13 + 12t + t2 = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 12t + t2 = 0 + -13
12t + t2 = 0 + -13

Combine like terms: 0 + -13 = -13
12t + t2 = -13

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

Add '36' to each side of the equation.
12t + 36 + t2 = -13 + 36

Reorder the terms:
36 + 12t + t2 = -13 + 36

Combine like terms: -13 + 36 = 23
36 + 12t + t2 = 23

Factor a perfect square on the left side:
(t + 6)(t + 6) = 23

Calculate the square root of the right side: 4.795831523

Break this problem into two subproblems by setting 
(t + 6) equal to 4.795831523 and -4.795831523.

Subproblem 1

t + 6 = 4.795831523 Simplifying t + 6 = 4.795831523 Reorder the terms: 6 + t = 4.795831523 Solving 6 + t = 4.795831523 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + t = 4.795831523 + -6 Combine like terms: 6 + -6 = 0 0 + t = 4.795831523 + -6 t = 4.795831523 + -6 Combine like terms: 4.795831523 + -6 = -1.204168477 t = -1.204168477 Simplifying t = -1.204168477

Subproblem 2

t + 6 = -4.795831523 Simplifying t + 6 = -4.795831523 Reorder the terms: 6 + t = -4.795831523 Solving 6 + t = -4.795831523 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + t = -4.795831523 + -6 Combine like terms: 6 + -6 = 0 0 + t = -4.795831523 + -6 t = -4.795831523 + -6 Combine like terms: -4.795831523 + -6 = -10.795831523 t = -10.795831523 Simplifying t = -10.795831523

Solution

The solution to the problem is based on the solutions from the subproblems. t = {-1.204168477, -10.795831523}

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