t=-16t^2+80t+4

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Solution for t=-16t^2+80t+4 equation:


Simplifying
t = -16t2 + 80t + 4

Reorder the terms:
t = 4 + 80t + -16t2

Solving
t = 4 + 80t + -16t2

Solving for variable 't'.

Reorder the terms:
-4 + t + -80t + 16t2 = 4 + 80t + -16t2 + -4 + -80t + 16t2

Combine like terms: t + -80t = -79t
-4 + -79t + 16t2 = 4 + 80t + -16t2 + -4 + -80t + 16t2

Reorder the terms:
-4 + -79t + 16t2 = 4 + -4 + 80t + -80t + -16t2 + 16t2

Combine like terms: 4 + -4 = 0
-4 + -79t + 16t2 = 0 + 80t + -80t + -16t2 + 16t2
-4 + -79t + 16t2 = 80t + -80t + -16t2 + 16t2

Combine like terms: 80t + -80t = 0
-4 + -79t + 16t2 = 0 + -16t2 + 16t2
-4 + -79t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
-4 + -79t + 16t2 = 0

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

Divide each side by '16'.
-0.25 + -4.9375t + t2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + -4.9375t + 0.25 + t2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + -4.9375t + t2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + -4.9375t + t2 = 0 + 0.25
-4.9375t + t2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
-4.9375t + t2 = 0.25

The t term is -4.9375t.  Take half its coefficient (-2.46875).
Square it (6.094726563) and add it to both sides.

Add '6.094726563' to each side of the equation.
-4.9375t + 6.094726563 + t2 = 0.25 + 6.094726563

Reorder the terms:
6.094726563 + -4.9375t + t2 = 0.25 + 6.094726563

Combine like terms: 0.25 + 6.094726563 = 6.344726563
6.094726563 + -4.9375t + t2 = 6.344726563

Factor a perfect square on the left side:
(t + -2.46875)(t + -2.46875) = 6.344726563

Calculate the square root of the right side: 2.518874067

Break this problem into two subproblems by setting 
(t + -2.46875) equal to 2.518874067 and -2.518874067.

Subproblem 1

t + -2.46875 = 2.518874067 Simplifying t + -2.46875 = 2.518874067 Reorder the terms: -2.46875 + t = 2.518874067 Solving -2.46875 + t = 2.518874067 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.46875' to each side of the equation. -2.46875 + 2.46875 + t = 2.518874067 + 2.46875 Combine like terms: -2.46875 + 2.46875 = 0.00000 0.00000 + t = 2.518874067 + 2.46875 t = 2.518874067 + 2.46875 Combine like terms: 2.518874067 + 2.46875 = 4.987624067 t = 4.987624067 Simplifying t = 4.987624067

Subproblem 2

t + -2.46875 = -2.518874067 Simplifying t + -2.46875 = -2.518874067 Reorder the terms: -2.46875 + t = -2.518874067 Solving -2.46875 + t = -2.518874067 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.46875' to each side of the equation. -2.46875 + 2.46875 + t = -2.518874067 + 2.46875 Combine like terms: -2.46875 + 2.46875 = 0.00000 0.00000 + t = -2.518874067 + 2.46875 t = -2.518874067 + 2.46875 Combine like terms: -2.518874067 + 2.46875 = -0.050124067 t = -0.050124067 Simplifying t = -0.050124067

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.987624067, -0.050124067}

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