55t-5t^2+13=0

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Solution for 55t-5t^2+13=0 equation:


Simplifying
55t + -5t2 + 13 = 0

Reorder the terms:
13 + 55t + -5t2 = 0

Solving
13 + 55t + -5t2 = 0

Solving for variable 't'.

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

Divide each side by '-5'.
-2.6 + -11t + t2 = 0

Move the constant term to the right:

Add '2.6' to each side of the equation.
-2.6 + -11t + 2.6 + t2 = 0 + 2.6

Reorder the terms:
-2.6 + 2.6 + -11t + t2 = 0 + 2.6

Combine like terms: -2.6 + 2.6 = 0.0
0.0 + -11t + t2 = 0 + 2.6
-11t + t2 = 0 + 2.6

Combine like terms: 0 + 2.6 = 2.6
-11t + t2 = 2.6

The t term is -11t.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11t + 30.25 + t2 = 2.6 + 30.25

Reorder the terms:
30.25 + -11t + t2 = 2.6 + 30.25

Combine like terms: 2.6 + 30.25 = 32.85
30.25 + -11t + t2 = 32.85

Factor a perfect square on the left side:
(t + -5.5)(t + -5.5) = 32.85

Calculate the square root of the right side: 5.731491952

Break this problem into two subproblems by setting 
(t + -5.5) equal to 5.731491952 and -5.731491952.

Subproblem 1

t + -5.5 = 5.731491952 Simplifying t + -5.5 = 5.731491952 Reorder the terms: -5.5 + t = 5.731491952 Solving -5.5 + t = 5.731491952 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + t = 5.731491952 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + t = 5.731491952 + 5.5 t = 5.731491952 + 5.5 Combine like terms: 5.731491952 + 5.5 = 11.231491952 t = 11.231491952 Simplifying t = 11.231491952

Subproblem 2

t + -5.5 = -5.731491952 Simplifying t + -5.5 = -5.731491952 Reorder the terms: -5.5 + t = -5.731491952 Solving -5.5 + t = -5.731491952 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + t = -5.731491952 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + t = -5.731491952 + 5.5 t = -5.731491952 + 5.5 Combine like terms: -5.731491952 + 5.5 = -0.231491952 t = -0.231491952 Simplifying t = -0.231491952

Solution

The solution to the problem is based on the solutions from the subproblems. t = {11.231491952, -0.231491952}

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