-4.9t^2+9.8t+3=0

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Solution for -4.9t^2+9.8t+3=0 equation:


Simplifying
-4.9t2 + 9.8t + 3 = 0

Reorder the terms:
3 + 9.8t + -4.9t2 = 0

Solving
3 + 9.8t + -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'.
-0.612244898 + -2t + t2 = 0

Move the constant term to the right:

Add '0.612244898' to each side of the equation.
-0.612244898 + -2t + 0.612244898 + t2 = 0 + 0.612244898

Reorder the terms:
-0.612244898 + 0.612244898 + -2t + t2 = 0 + 0.612244898

Combine like terms: -0.612244898 + 0.612244898 = 0.000000000
0.000000000 + -2t + t2 = 0 + 0.612244898
-2t + t2 = 0 + 0.612244898

Combine like terms: 0 + 0.612244898 = 0.612244898
-2t + t2 = 0.612244898

The t term is -2t.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2t + 1 + t2 = 0.612244898 + 1

Reorder the terms:
1 + -2t + t2 = 0.612244898 + 1

Combine like terms: 0.612244898 + 1 = 1.612244898
1 + -2t + t2 = 1.612244898

Factor a perfect square on the left side:
(t + -1)(t + -1) = 1.612244898

Calculate the square root of the right side: 1.26974206

Break this problem into two subproblems by setting 
(t + -1) equal to 1.26974206 and -1.26974206.

Subproblem 1

t + -1 = 1.26974206 Simplifying t + -1 = 1.26974206 Reorder the terms: -1 + t = 1.26974206 Solving -1 + t = 1.26974206 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + t = 1.26974206 + 1 Combine like terms: -1 + 1 = 0 0 + t = 1.26974206 + 1 t = 1.26974206 + 1 Combine like terms: 1.26974206 + 1 = 2.26974206 t = 2.26974206 Simplifying t = 2.26974206

Subproblem 2

t + -1 = -1.26974206 Simplifying t + -1 = -1.26974206 Reorder the terms: -1 + t = -1.26974206 Solving -1 + t = -1.26974206 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + t = -1.26974206 + 1 Combine like terms: -1 + 1 = 0 0 + t = -1.26974206 + 1 t = -1.26974206 + 1 Combine like terms: -1.26974206 + 1 = -0.26974206 t = -0.26974206 Simplifying t = -0.26974206

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.26974206, -0.26974206}

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