0=4.905t^2-19t+11

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Solution for 0=4.905t^2-19t+11 equation:


Simplifying
0 = 4.905t2 + -19t + 11

Reorder the terms:
0 = 11 + -19t + 4.905t2

Solving
0 = 11 + -19t + 4.905t2

Solving for variable 't'.

Combine like terms: 0 + -11 = -11
-11 + 19t + -4.905t2 = 11 + -19t + 4.905t2 + -11 + 19t + -4.905t2

Reorder the terms:
-11 + 19t + -4.905t2 = 11 + -11 + -19t + 19t + 4.905t2 + -4.905t2

Combine like terms: 11 + -11 = 0
-11 + 19t + -4.905t2 = 0 + -19t + 19t + 4.905t2 + -4.905t2
-11 + 19t + -4.905t2 = -19t + 19t + 4.905t2 + -4.905t2

Combine like terms: -19t + 19t = 0
-11 + 19t + -4.905t2 = 0 + 4.905t2 + -4.905t2
-11 + 19t + -4.905t2 = 4.905t2 + -4.905t2

Combine like terms: 4.905t2 + -4.905t2 = 0.000
-11 + 19t + -4.905t2 = 0.000

Begin completing the square.  Divide all terms by
-4.905 the coefficient of the squared term: 

Divide each side by '-4.905'.
2.242609582 + -3.873598369t + t2 = 0

Move the constant term to the right:

Add '-2.242609582' to each side of the equation.
2.242609582 + -3.873598369t + -2.242609582 + t2 = 0 + -2.242609582

Reorder the terms:
2.242609582 + -2.242609582 + -3.873598369t + t2 = 0 + -2.242609582

Combine like terms: 2.242609582 + -2.242609582 = 0.000000000
0.000000000 + -3.873598369t + t2 = 0 + -2.242609582
-3.873598369t + t2 = 0 + -2.242609582

Combine like terms: 0 + -2.242609582 = -2.242609582
-3.873598369t + t2 = -2.242609582

The t term is -3.873598369t.  Take half its coefficient (-1.936799185).
Square it (3.751191083) and add it to both sides.

Add '3.751191083' to each side of the equation.
-3.873598369t + 3.751191083 + t2 = -2.242609582 + 3.751191083

Reorder the terms:
3.751191083 + -3.873598369t + t2 = -2.242609582 + 3.751191083

Combine like terms: -2.242609582 + 3.751191083 = 1.508581501
3.751191083 + -3.873598369t + t2 = 1.508581501

Factor a perfect square on the left side:
(t + -1.936799185)(t + -1.936799185) = 1.508581501

Calculate the square root of the right side: 1.228243258

Break this problem into two subproblems by setting 
(t + -1.936799185) equal to 1.228243258 and -1.228243258.

Subproblem 1

t + -1.936799185 = 1.228243258 Simplifying t + -1.936799185 = 1.228243258 Reorder the terms: -1.936799185 + t = 1.228243258 Solving -1.936799185 + t = 1.228243258 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.936799185' to each side of the equation. -1.936799185 + 1.936799185 + t = 1.228243258 + 1.936799185 Combine like terms: -1.936799185 + 1.936799185 = 0.000000000 0.000000000 + t = 1.228243258 + 1.936799185 t = 1.228243258 + 1.936799185 Combine like terms: 1.228243258 + 1.936799185 = 3.165042443 t = 3.165042443 Simplifying t = 3.165042443

Subproblem 2

t + -1.936799185 = -1.228243258 Simplifying t + -1.936799185 = -1.228243258 Reorder the terms: -1.936799185 + t = -1.228243258 Solving -1.936799185 + t = -1.228243258 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.936799185' to each side of the equation. -1.936799185 + 1.936799185 + t = -1.228243258 + 1.936799185 Combine like terms: -1.936799185 + 1.936799185 = 0.000000000 0.000000000 + t = -1.228243258 + 1.936799185 t = -1.228243258 + 1.936799185 Combine like terms: -1.228243258 + 1.936799185 = 0.708555927 t = 0.708555927 Simplifying t = 0.708555927

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.165042443, 0.708555927}

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