2t^2+13t=6

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Solution for 2t^2+13t=6 equation:


Simplifying
2t2 + 13t = 6

Reorder the terms:
13t + 2t2 = 6

Solving
13t + 2t2 = 6

Solving for variable 't'.

Reorder the terms:
-6 + 13t + 2t2 = 6 + -6

Combine like terms: 6 + -6 = 0
-6 + 13t + 2t2 = 0

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

Divide each side by '2'.
-3 + 6.5t + t2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 6.5t + 3 + t2 = 0 + 3

Reorder the terms:
-3 + 3 + 6.5t + t2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 6.5t + t2 = 0 + 3
6.5t + t2 = 0 + 3

Combine like terms: 0 + 3 = 3
6.5t + t2 = 3

The t term is 6.5t.  Take half its coefficient (3.25).
Square it (10.5625) and add it to both sides.

Add '10.5625' to each side of the equation.
6.5t + 10.5625 + t2 = 3 + 10.5625

Reorder the terms:
10.5625 + 6.5t + t2 = 3 + 10.5625

Combine like terms: 3 + 10.5625 = 13.5625
10.5625 + 6.5t + t2 = 13.5625

Factor a perfect square on the left side:
(t + 3.25)(t + 3.25) = 13.5625

Calculate the square root of the right side: 3.682729966

Break this problem into two subproblems by setting 
(t + 3.25) equal to 3.682729966 and -3.682729966.

Subproblem 1

t + 3.25 = 3.682729966 Simplifying t + 3.25 = 3.682729966 Reorder the terms: 3.25 + t = 3.682729966 Solving 3.25 + t = 3.682729966 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-3.25' to each side of the equation. 3.25 + -3.25 + t = 3.682729966 + -3.25 Combine like terms: 3.25 + -3.25 = 0.00 0.00 + t = 3.682729966 + -3.25 t = 3.682729966 + -3.25 Combine like terms: 3.682729966 + -3.25 = 0.432729966 t = 0.432729966 Simplifying t = 0.432729966

Subproblem 2

t + 3.25 = -3.682729966 Simplifying t + 3.25 = -3.682729966 Reorder the terms: 3.25 + t = -3.682729966 Solving 3.25 + t = -3.682729966 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-3.25' to each side of the equation. 3.25 + -3.25 + t = -3.682729966 + -3.25 Combine like terms: 3.25 + -3.25 = 0.00 0.00 + t = -3.682729966 + -3.25 t = -3.682729966 + -3.25 Combine like terms: -3.682729966 + -3.25 = -6.932729966 t = -6.932729966 Simplifying t = -6.932729966

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.432729966, -6.932729966}

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