-4.9t^2+6t+2=0

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Solution for -4.9t^2+6t+2=0 equation:


Simplifying
-4.9t2 + 6t + 2 = 0

Reorder the terms:
2 + 6t + -4.9t2 = 0

Solving
2 + 6t + -4.9t2 = 0

Solving for variable 't'.

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

Divide each side by '-4.9'.
-0.4081632653 + -1.224489796t + t2 = 0

Move the constant term to the right:

Add '0.4081632653' to each side of the equation.
-0.4081632653 + -1.224489796t + 0.4081632653 + t2 = 0 + 0.4081632653

Reorder the terms:
-0.4081632653 + 0.4081632653 + -1.224489796t + t2 = 0 + 0.4081632653

Combine like terms: -0.4081632653 + 0.4081632653 = 0.0000000000
0.0000000000 + -1.224489796t + t2 = 0 + 0.4081632653
-1.224489796t + t2 = 0 + 0.4081632653

Combine like terms: 0 + 0.4081632653 = 0.4081632653
-1.224489796t + t2 = 0.4081632653

The t term is -1.224489796t.  Take half its coefficient (-0.612244898).
Square it (0.3748438151) and add it to both sides.

Add '0.3748438151' to each side of the equation.
-1.224489796t + 0.3748438151 + t2 = 0.4081632653 + 0.3748438151

Reorder the terms:
0.3748438151 + -1.224489796t + t2 = 0.4081632653 + 0.3748438151

Combine like terms: 0.4081632653 + 0.3748438151 = 0.7830070804
0.3748438151 + -1.224489796t + t2 = 0.7830070804

Factor a perfect square on the left side:
(t + -0.612244898)(t + -0.612244898) = 0.7830070804

Calculate the square root of the right side: 0.884876873

Break this problem into two subproblems by setting 
(t + -0.612244898) equal to 0.884876873 and -0.884876873.

Subproblem 1

t + -0.612244898 = 0.884876873 Simplifying t + -0.612244898 = 0.884876873 Reorder the terms: -0.612244898 + t = 0.884876873 Solving -0.612244898 + t = 0.884876873 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.612244898' to each side of the equation. -0.612244898 + 0.612244898 + t = 0.884876873 + 0.612244898 Combine like terms: -0.612244898 + 0.612244898 = 0.000000000 0.000000000 + t = 0.884876873 + 0.612244898 t = 0.884876873 + 0.612244898 Combine like terms: 0.884876873 + 0.612244898 = 1.497121771 t = 1.497121771 Simplifying t = 1.497121771

Subproblem 2

t + -0.612244898 = -0.884876873 Simplifying t + -0.612244898 = -0.884876873 Reorder the terms: -0.612244898 + t = -0.884876873 Solving -0.612244898 + t = -0.884876873 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.612244898' to each side of the equation. -0.612244898 + 0.612244898 + t = -0.884876873 + 0.612244898 Combine like terms: -0.612244898 + 0.612244898 = 0.000000000 0.000000000 + t = -0.884876873 + 0.612244898 t = -0.884876873 + 0.612244898 Combine like terms: -0.884876873 + 0.612244898 = -0.272631975 t = -0.272631975 Simplifying t = -0.272631975

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.497121771, -0.272631975}

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