t^2+19t+19=0

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Solution for t^2+19t+19=0 equation:


Simplifying
t2 + 19t + 19 = 0

Reorder the terms:
19 + 19t + t2 = 0

Solving
19 + 19t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '-19' to each side of the equation.
19 + 19t + -19 + t2 = 0 + -19

Reorder the terms:
19 + -19 + 19t + t2 = 0 + -19

Combine like terms: 19 + -19 = 0
0 + 19t + t2 = 0 + -19
19t + t2 = 0 + -19

Combine like terms: 0 + -19 = -19
19t + t2 = -19

The t term is 19t.  Take half its coefficient (9.5).
Square it (90.25) and add it to both sides.

Add '90.25' to each side of the equation.
19t + 90.25 + t2 = -19 + 90.25

Reorder the terms:
90.25 + 19t + t2 = -19 + 90.25

Combine like terms: -19 + 90.25 = 71.25
90.25 + 19t + t2 = 71.25

Factor a perfect square on the left side:
(t + 9.5)(t + 9.5) = 71.25

Calculate the square root of the right side: 8.440971508

Break this problem into two subproblems by setting 
(t + 9.5) equal to 8.440971508 and -8.440971508.

Subproblem 1

t + 9.5 = 8.440971508 Simplifying t + 9.5 = 8.440971508 Reorder the terms: 9.5 + t = 8.440971508 Solving 9.5 + t = 8.440971508 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-9.5' to each side of the equation. 9.5 + -9.5 + t = 8.440971508 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + t = 8.440971508 + -9.5 t = 8.440971508 + -9.5 Combine like terms: 8.440971508 + -9.5 = -1.059028492 t = -1.059028492 Simplifying t = -1.059028492

Subproblem 2

t + 9.5 = -8.440971508 Simplifying t + 9.5 = -8.440971508 Reorder the terms: 9.5 + t = -8.440971508 Solving 9.5 + t = -8.440971508 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-9.5' to each side of the equation. 9.5 + -9.5 + t = -8.440971508 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + t = -8.440971508 + -9.5 t = -8.440971508 + -9.5 Combine like terms: -8.440971508 + -9.5 = -17.940971508 t = -17.940971508 Simplifying t = -17.940971508

Solution

The solution to the problem is based on the solutions from the subproblems. t = {-1.059028492, -17.940971508}

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