t^2-13t+2=0

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


Simplifying
t2 + -13t + 2 = 0

Reorder the terms:
2 + -13t + t2 = 0

Solving
2 + -13t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -13t + -2 + t2 = 0 + -2

Reorder the terms:
2 + -2 + -13t + t2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -13t + t2 = 0 + -2
-13t + t2 = 0 + -2

Combine like terms: 0 + -2 = -2
-13t + t2 = -2

The t term is -13t.  Take half its coefficient (-6.5).
Square it (42.25) and add it to both sides.

Add '42.25' to each side of the equation.
-13t + 42.25 + t2 = -2 + 42.25

Reorder the terms:
42.25 + -13t + t2 = -2 + 42.25

Combine like terms: -2 + 42.25 = 40.25
42.25 + -13t + t2 = 40.25

Factor a perfect square on the left side:
(t + -6.5)(t + -6.5) = 40.25

Calculate the square root of the right side: 6.34428877

Break this problem into two subproblems by setting 
(t + -6.5) equal to 6.34428877 and -6.34428877.

Subproblem 1

t + -6.5 = 6.34428877 Simplifying t + -6.5 = 6.34428877 Reorder the terms: -6.5 + t = 6.34428877 Solving -6.5 + t = 6.34428877 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + t = 6.34428877 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + t = 6.34428877 + 6.5 t = 6.34428877 + 6.5 Combine like terms: 6.34428877 + 6.5 = 12.84428877 t = 12.84428877 Simplifying t = 12.84428877

Subproblem 2

t + -6.5 = -6.34428877 Simplifying t + -6.5 = -6.34428877 Reorder the terms: -6.5 + t = -6.34428877 Solving -6.5 + t = -6.34428877 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + t = -6.34428877 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + t = -6.34428877 + 6.5 t = -6.34428877 + 6.5 Combine like terms: -6.34428877 + 6.5 = 0.15571123 t = 0.15571123 Simplifying t = 0.15571123

Solution

The solution to the problem is based on the solutions from the subproblems. t = {12.84428877, 0.15571123}

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