0=-16t^2+65.5t+5.5

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Solution for 0=-16t^2+65.5t+5.5 equation:


Simplifying
0 = -16t2 + 65.5t + 5.5

Reorder the terms:
0 = 5.5 + 65.5t + -16t2

Solving
0 = 5.5 + 65.5t + -16t2

Solving for variable 't'.

Combine like terms: 0 + -5.5 = -5.5
-5.5 + -65.5t + 16t2 = 5.5 + 65.5t + -16t2 + -5.5 + -65.5t + 16t2

Reorder the terms:
-5.5 + -65.5t + 16t2 = 5.5 + -5.5 + 65.5t + -65.5t + -16t2 + 16t2

Combine like terms: 5.5 + -5.5 = 0.0
-5.5 + -65.5t + 16t2 = 0.0 + 65.5t + -65.5t + -16t2 + 16t2
-5.5 + -65.5t + 16t2 = 65.5t + -65.5t + -16t2 + 16t2

Combine like terms: 65.5t + -65.5t = 0.0
-5.5 + -65.5t + 16t2 = 0.0 + -16t2 + 16t2
-5.5 + -65.5t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
-5.5 + -65.5t + 16t2 = 0

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

Divide each side by '16'.
-0.34375 + -4.09375t + t2 = 0

Move the constant term to the right:

Add '0.34375' to each side of the equation.
-0.34375 + -4.09375t + 0.34375 + t2 = 0 + 0.34375

Reorder the terms:
-0.34375 + 0.34375 + -4.09375t + t2 = 0 + 0.34375

Combine like terms: -0.34375 + 0.34375 = 0.00000
0.00000 + -4.09375t + t2 = 0 + 0.34375
-4.09375t + t2 = 0 + 0.34375

Combine like terms: 0 + 0.34375 = 0.34375
-4.09375t + t2 = 0.34375

The t term is -4.09375t.  Take half its coefficient (-2.046875).
Square it (4.189697266) and add it to both sides.

Add '4.189697266' to each side of the equation.
-4.09375t + 4.189697266 + t2 = 0.34375 + 4.189697266

Reorder the terms:
4.189697266 + -4.09375t + t2 = 0.34375 + 4.189697266

Combine like terms: 0.34375 + 4.189697266 = 4.533447266
4.189697266 + -4.09375t + t2 = 4.533447266

Factor a perfect square on the left side:
(t + -2.046875)(t + -2.046875) = 4.533447266

Calculate the square root of the right side: 2.129189345

Break this problem into two subproblems by setting 
(t + -2.046875) equal to 2.129189345 and -2.129189345.

Subproblem 1

t + -2.046875 = 2.129189345 Simplifying t + -2.046875 = 2.129189345 Reorder the terms: -2.046875 + t = 2.129189345 Solving -2.046875 + t = 2.129189345 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.046875' to each side of the equation. -2.046875 + 2.046875 + t = 2.129189345 + 2.046875 Combine like terms: -2.046875 + 2.046875 = 0.000000 0.000000 + t = 2.129189345 + 2.046875 t = 2.129189345 + 2.046875 Combine like terms: 2.129189345 + 2.046875 = 4.176064345 t = 4.176064345 Simplifying t = 4.176064345

Subproblem 2

t + -2.046875 = -2.129189345 Simplifying t + -2.046875 = -2.129189345 Reorder the terms: -2.046875 + t = -2.129189345 Solving -2.046875 + t = -2.129189345 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.046875' to each side of the equation. -2.046875 + 2.046875 + t = -2.129189345 + 2.046875 Combine like terms: -2.046875 + 2.046875 = 0.000000 0.000000 + t = -2.129189345 + 2.046875 t = -2.129189345 + 2.046875 Combine like terms: -2.129189345 + 2.046875 = -0.082314345 t = -0.082314345 Simplifying t = -0.082314345

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.176064345, -0.082314345}

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