t=-4.9t^2+19.6t+1

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Solution for t=-4.9t^2+19.6t+1 equation:


Simplifying
t = -4.9t2 + 19.6t + 1

Reorder the terms:
t = 1 + 19.6t + -4.9t2

Solving
t = 1 + 19.6t + -4.9t2

Solving for variable 't'.

Reorder the terms:
-1 + t + -19.6t + 4.9t2 = 1 + 19.6t + -4.9t2 + -1 + -19.6t + 4.9t2

Combine like terms: t + -19.6t = -18.6t
-1 + -18.6t + 4.9t2 = 1 + 19.6t + -4.9t2 + -1 + -19.6t + 4.9t2

Reorder the terms:
-1 + -18.6t + 4.9t2 = 1 + -1 + 19.6t + -19.6t + -4.9t2 + 4.9t2

Combine like terms: 1 + -1 = 0
-1 + -18.6t + 4.9t2 = 0 + 19.6t + -19.6t + -4.9t2 + 4.9t2
-1 + -18.6t + 4.9t2 = 19.6t + -19.6t + -4.9t2 + 4.9t2

Combine like terms: 19.6t + -19.6t = 0.0
-1 + -18.6t + 4.9t2 = 0.0 + -4.9t2 + 4.9t2
-1 + -18.6t + 4.9t2 = -4.9t2 + 4.9t2

Combine like terms: -4.9t2 + 4.9t2 = 0.0
-1 + -18.6t + 4.9t2 = 0.0

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

Divide each side by '4.9'.
-0.2040816327 + -3.795918367t + t2 = 0

Move the constant term to the right:

Add '0.2040816327' to each side of the equation.
-0.2040816327 + -3.795918367t + 0.2040816327 + t2 = 0 + 0.2040816327

Reorder the terms:
-0.2040816327 + 0.2040816327 + -3.795918367t + t2 = 0 + 0.2040816327

Combine like terms: -0.2040816327 + 0.2040816327 = 0.0000000000
0.0000000000 + -3.795918367t + t2 = 0 + 0.2040816327
-3.795918367t + t2 = 0 + 0.2040816327

Combine like terms: 0 + 0.2040816327 = 0.2040816327
-3.795918367t + t2 = 0.2040816327

The t term is -3.795918367t.  Take half its coefficient (-1.897959184).
Square it (3.602249064) and add it to both sides.

Add '3.602249064' to each side of the equation.
-3.795918367t + 3.602249064 + t2 = 0.2040816327 + 3.602249064

Reorder the terms:
3.602249064 + -3.795918367t + t2 = 0.2040816327 + 3.602249064

Combine like terms: 0.2040816327 + 3.602249064 = 3.8063306967
3.602249064 + -3.795918367t + t2 = 3.8063306967

Factor a perfect square on the left side:
(t + -1.897959184)(t + -1.897959184) = 3.8063306967

Calculate the square root of the right side: 1.950981983

Break this problem into two subproblems by setting 
(t + -1.897959184) equal to 1.950981983 and -1.950981983.

Subproblem 1

t + -1.897959184 = 1.950981983 Simplifying t + -1.897959184 = 1.950981983 Reorder the terms: -1.897959184 + t = 1.950981983 Solving -1.897959184 + t = 1.950981983 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.897959184' to each side of the equation. -1.897959184 + 1.897959184 + t = 1.950981983 + 1.897959184 Combine like terms: -1.897959184 + 1.897959184 = 0.000000000 0.000000000 + t = 1.950981983 + 1.897959184 t = 1.950981983 + 1.897959184 Combine like terms: 1.950981983 + 1.897959184 = 3.848941167 t = 3.848941167 Simplifying t = 3.848941167

Subproblem 2

t + -1.897959184 = -1.950981983 Simplifying t + -1.897959184 = -1.950981983 Reorder the terms: -1.897959184 + t = -1.950981983 Solving -1.897959184 + t = -1.950981983 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.897959184' to each side of the equation. -1.897959184 + 1.897959184 + t = -1.950981983 + 1.897959184 Combine like terms: -1.897959184 + 1.897959184 = 0.000000000 0.000000000 + t = -1.950981983 + 1.897959184 t = -1.950981983 + 1.897959184 Combine like terms: -1.950981983 + 1.897959184 = -0.053022799 t = -0.053022799 Simplifying t = -0.053022799

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.848941167, -0.053022799}

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