0=-4.8t^2+19.6t+58.8

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Solution for 0=-4.8t^2+19.6t+58.8 equation:


Simplifying
0 = -4.8t2 + 19.6t + 58.8

Reorder the terms:
0 = 58.8 + 19.6t + -4.8t2

Solving
0 = 58.8 + 19.6t + -4.8t2

Solving for variable 't'.

Combine like terms: 0 + -58.8 = -58.8
-58.8 + -19.6t + 4.8t2 = 58.8 + 19.6t + -4.8t2 + -58.8 + -19.6t + 4.8t2

Reorder the terms:
-58.8 + -19.6t + 4.8t2 = 58.8 + -58.8 + 19.6t + -19.6t + -4.8t2 + 4.8t2

Combine like terms: 58.8 + -58.8 = 0.0
-58.8 + -19.6t + 4.8t2 = 0.0 + 19.6t + -19.6t + -4.8t2 + 4.8t2
-58.8 + -19.6t + 4.8t2 = 19.6t + -19.6t + -4.8t2 + 4.8t2

Combine like terms: 19.6t + -19.6t = 0.0
-58.8 + -19.6t + 4.8t2 = 0.0 + -4.8t2 + 4.8t2
-58.8 + -19.6t + 4.8t2 = -4.8t2 + 4.8t2

Combine like terms: -4.8t2 + 4.8t2 = 0.0
-58.8 + -19.6t + 4.8t2 = 0.0

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

Divide each side by '4.8'.
-12.25 + -4.083333333t + t2 = 0

Move the constant term to the right:

Add '12.25' to each side of the equation.
-12.25 + -4.083333333t + 12.25 + t2 = 0 + 12.25

Reorder the terms:
-12.25 + 12.25 + -4.083333333t + t2 = 0 + 12.25

Combine like terms: -12.25 + 12.25 = 0.00
0.00 + -4.083333333t + t2 = 0 + 12.25
-4.083333333t + t2 = 0 + 12.25

Combine like terms: 0 + 12.25 = 12.25
-4.083333333t + t2 = 12.25

The t term is -4.083333333t.  Take half its coefficient (-2.041666667).
Square it (4.168402779) and add it to both sides.

Add '4.168402779' to each side of the equation.
-4.083333333t + 4.168402779 + t2 = 12.25 + 4.168402779

Reorder the terms:
4.168402779 + -4.083333333t + t2 = 12.25 + 4.168402779

Combine like terms: 12.25 + 4.168402779 = 16.418402779
4.168402779 + -4.083333333t + t2 = 16.418402779

Factor a perfect square on the left side:
(t + -2.041666667)(t + -2.041666667) = 16.418402779

Calculate the square root of the right side: 4.05196283

Break this problem into two subproblems by setting 
(t + -2.041666667) equal to 4.05196283 and -4.05196283.

Subproblem 1

t + -2.041666667 = 4.05196283 Simplifying t + -2.041666667 = 4.05196283 Reorder the terms: -2.041666667 + t = 4.05196283 Solving -2.041666667 + t = 4.05196283 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.041666667' to each side of the equation. -2.041666667 + 2.041666667 + t = 4.05196283 + 2.041666667 Combine like terms: -2.041666667 + 2.041666667 = 0.000000000 0.000000000 + t = 4.05196283 + 2.041666667 t = 4.05196283 + 2.041666667 Combine like terms: 4.05196283 + 2.041666667 = 6.093629497 t = 6.093629497 Simplifying t = 6.093629497

Subproblem 2

t + -2.041666667 = -4.05196283 Simplifying t + -2.041666667 = -4.05196283 Reorder the terms: -2.041666667 + t = -4.05196283 Solving -2.041666667 + t = -4.05196283 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.041666667' to each side of the equation. -2.041666667 + 2.041666667 + t = -4.05196283 + 2.041666667 Combine like terms: -2.041666667 + 2.041666667 = 0.000000000 0.000000000 + t = -4.05196283 + 2.041666667 t = -4.05196283 + 2.041666667 Combine like terms: -4.05196283 + 2.041666667 = -2.010296163 t = -2.010296163 Simplifying t = -2.010296163

Solution

The solution to the problem is based on the solutions from the subproblems. t = {6.093629497, -2.010296163}

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