0=1.2t^2-20.08t+4.8

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Solution for 0=1.2t^2-20.08t+4.8 equation:


Simplifying
0 = 1.2t2 + -20.08t + 4.8

Reorder the terms:
0 = 4.8 + -20.08t + 1.2t2

Solving
0 = 4.8 + -20.08t + 1.2t2

Solving for variable 't'.

Combine like terms: 0 + -4.8 = -4.8
-4.8 + 20.08t + -1.2t2 = 4.8 + -20.08t + 1.2t2 + -4.8 + 20.08t + -1.2t2

Reorder the terms:
-4.8 + 20.08t + -1.2t2 = 4.8 + -4.8 + -20.08t + 20.08t + 1.2t2 + -1.2t2

Combine like terms: 4.8 + -4.8 = 0.0
-4.8 + 20.08t + -1.2t2 = 0.0 + -20.08t + 20.08t + 1.2t2 + -1.2t2
-4.8 + 20.08t + -1.2t2 = -20.08t + 20.08t + 1.2t2 + -1.2t2

Combine like terms: -20.08t + 20.08t = 0.00
-4.8 + 20.08t + -1.2t2 = 0.00 + 1.2t2 + -1.2t2
-4.8 + 20.08t + -1.2t2 = 1.2t2 + -1.2t2

Combine like terms: 1.2t2 + -1.2t2 = 0.0
-4.8 + 20.08t + -1.2t2 = 0.0

Begin completing the square.  Divide all terms by
-1.2 the coefficient of the squared term: 

Divide each side by '-1.2'.
4 + -16.73333333t + t2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -16.73333333t + -4 + t2 = 0 + -4

Reorder the terms:
4 + -4 + -16.73333333t + t2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -16.73333333t + t2 = 0 + -4
-16.73333333t + t2 = 0 + -4

Combine like terms: 0 + -4 = -4
-16.73333333t + t2 = -4

The t term is -16.73333333t.  Take half its coefficient (-8.366666665).
Square it (70.00111108) and add it to both sides.

Add '70.00111108' to each side of the equation.
-16.73333333t + 70.00111108 + t2 = -4 + 70.00111108

Reorder the terms:
70.00111108 + -16.73333333t + t2 = -4 + 70.00111108

Combine like terms: -4 + 70.00111108 = 66.00111108
70.00111108 + -16.73333333t + t2 = 66.00111108

Factor a perfect square on the left side:
(t + -8.366666665)(t + -8.366666665) = 66.00111108

Calculate the square root of the right side: 8.124106787

Break this problem into two subproblems by setting 
(t + -8.366666665) equal to 8.124106787 and -8.124106787.

Subproblem 1

t + -8.366666665 = 8.124106787 Simplifying t + -8.366666665 = 8.124106787 Reorder the terms: -8.366666665 + t = 8.124106787 Solving -8.366666665 + t = 8.124106787 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '8.366666665' to each side of the equation. -8.366666665 + 8.366666665 + t = 8.124106787 + 8.366666665 Combine like terms: -8.366666665 + 8.366666665 = 0.000000000 0.000000000 + t = 8.124106787 + 8.366666665 t = 8.124106787 + 8.366666665 Combine like terms: 8.124106787 + 8.366666665 = 16.490773452 t = 16.490773452 Simplifying t = 16.490773452

Subproblem 2

t + -8.366666665 = -8.124106787 Simplifying t + -8.366666665 = -8.124106787 Reorder the terms: -8.366666665 + t = -8.124106787 Solving -8.366666665 + t = -8.124106787 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '8.366666665' to each side of the equation. -8.366666665 + 8.366666665 + t = -8.124106787 + 8.366666665 Combine like terms: -8.366666665 + 8.366666665 = 0.000000000 0.000000000 + t = -8.124106787 + 8.366666665 t = -8.124106787 + 8.366666665 Combine like terms: -8.124106787 + 8.366666665 = 0.242559878 t = 0.242559878 Simplifying t = 0.242559878

Solution

The solution to the problem is based on the solutions from the subproblems. t = {16.490773452, 0.242559878}

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