t=-16t^2+8t+80

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Solution for t=-16t^2+8t+80 equation:


Simplifying
t = -16t2 + 8t + 80

Reorder the terms:
t = 80 + 8t + -16t2

Solving
t = 80 + 8t + -16t2

Solving for variable 't'.

Reorder the terms:
-80 + t + -8t + 16t2 = 80 + 8t + -16t2 + -80 + -8t + 16t2

Combine like terms: t + -8t = -7t
-80 + -7t + 16t2 = 80 + 8t + -16t2 + -80 + -8t + 16t2

Reorder the terms:
-80 + -7t + 16t2 = 80 + -80 + 8t + -8t + -16t2 + 16t2

Combine like terms: 80 + -80 = 0
-80 + -7t + 16t2 = 0 + 8t + -8t + -16t2 + 16t2
-80 + -7t + 16t2 = 8t + -8t + -16t2 + 16t2

Combine like terms: 8t + -8t = 0
-80 + -7t + 16t2 = 0 + -16t2 + 16t2
-80 + -7t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
-80 + -7t + 16t2 = 0

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

Divide each side by '16'.
-5 + -0.4375t + t2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -0.4375t + 5 + t2 = 0 + 5

Reorder the terms:
-5 + 5 + -0.4375t + t2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -0.4375t + t2 = 0 + 5
-0.4375t + t2 = 0 + 5

Combine like terms: 0 + 5 = 5
-0.4375t + t2 = 5

The t term is -0.4375t.  Take half its coefficient (-0.21875).
Square it (0.0478515625) and add it to both sides.

Add '0.0478515625' to each side of the equation.
-0.4375t + 0.0478515625 + t2 = 5 + 0.0478515625

Reorder the terms:
0.0478515625 + -0.4375t + t2 = 5 + 0.0478515625

Combine like terms: 5 + 0.0478515625 = 5.0478515625
0.0478515625 + -0.4375t + t2 = 5.0478515625

Factor a perfect square on the left side:
(t + -0.21875)(t + -0.21875) = 5.0478515625

Calculate the square root of the right side: 2.246742434

Break this problem into two subproblems by setting 
(t + -0.21875) equal to 2.246742434 and -2.246742434.

Subproblem 1

t + -0.21875 = 2.246742434 Simplifying t + -0.21875 = 2.246742434 Reorder the terms: -0.21875 + t = 2.246742434 Solving -0.21875 + t = 2.246742434 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.21875' to each side of the equation. -0.21875 + 0.21875 + t = 2.246742434 + 0.21875 Combine like terms: -0.21875 + 0.21875 = 0.00000 0.00000 + t = 2.246742434 + 0.21875 t = 2.246742434 + 0.21875 Combine like terms: 2.246742434 + 0.21875 = 2.465492434 t = 2.465492434 Simplifying t = 2.465492434

Subproblem 2

t + -0.21875 = -2.246742434 Simplifying t + -0.21875 = -2.246742434 Reorder the terms: -0.21875 + t = -2.246742434 Solving -0.21875 + t = -2.246742434 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.21875' to each side of the equation. -0.21875 + 0.21875 + t = -2.246742434 + 0.21875 Combine like terms: -0.21875 + 0.21875 = 0.00000 0.00000 + t = -2.246742434 + 0.21875 t = -2.246742434 + 0.21875 Combine like terms: -2.246742434 + 0.21875 = -2.027992434 t = -2.027992434 Simplifying t = -2.027992434

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.465492434, -2.027992434}

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