61-6t-5t^2=0

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Solution for 61-6t-5t^2=0 equation:


Simplifying
61 + -6t + -5t2 = 0

Solving
61 + -6t + -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'.
-12.2 + 1.2t + t2 = 0

Move the constant term to the right:

Add '12.2' to each side of the equation.
-12.2 + 1.2t + 12.2 + t2 = 0 + 12.2

Reorder the terms:
-12.2 + 12.2 + 1.2t + t2 = 0 + 12.2

Combine like terms: -12.2 + 12.2 = 0.0
0.0 + 1.2t + t2 = 0 + 12.2
1.2t + t2 = 0 + 12.2

Combine like terms: 0 + 12.2 = 12.2
1.2t + t2 = 12.2

The t term is 1.2t.  Take half its coefficient (0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
1.2t + 0.36 + t2 = 12.2 + 0.36

Reorder the terms:
0.36 + 1.2t + t2 = 12.2 + 0.36

Combine like terms: 12.2 + 0.36 = 12.56
0.36 + 1.2t + t2 = 12.56

Factor a perfect square on the left side:
(t + 0.6)(t + 0.6) = 12.56

Calculate the square root of the right side: 3.544009029

Break this problem into two subproblems by setting 
(t + 0.6) equal to 3.544009029 and -3.544009029.

Subproblem 1

t + 0.6 = 3.544009029 Simplifying t + 0.6 = 3.544009029 Reorder the terms: 0.6 + t = 3.544009029 Solving 0.6 + t = 3.544009029 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + t = 3.544009029 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + t = 3.544009029 + -0.6 t = 3.544009029 + -0.6 Combine like terms: 3.544009029 + -0.6 = 2.944009029 t = 2.944009029 Simplifying t = 2.944009029

Subproblem 2

t + 0.6 = -3.544009029 Simplifying t + 0.6 = -3.544009029 Reorder the terms: 0.6 + t = -3.544009029 Solving 0.6 + t = -3.544009029 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + t = -3.544009029 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + t = -3.544009029 + -0.6 t = -3.544009029 + -0.6 Combine like terms: -3.544009029 + -0.6 = -4.144009029 t = -4.144009029 Simplifying t = -4.144009029

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.944009029, -4.144009029}

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