4.9t^2+t=3

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Solution for 4.9t^2+t=3 equation:


Simplifying
4.9t2 + t = 3

Reorder the terms:
t + 4.9t2 = 3

Solving
t + 4.9t2 = 3

Solving for variable 't'.

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

Combine like terms: 3 + -3 = 0
-3 + t + 4.9t2 = 0

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

Divide each side by '4.9'.
-0.612244898 + 0.2040816327t + t2 = 0

Move the constant term to the right:

Add '0.612244898' to each side of the equation.
-0.612244898 + 0.2040816327t + 0.612244898 + t2 = 0 + 0.612244898

Reorder the terms:
-0.612244898 + 0.612244898 + 0.2040816327t + t2 = 0 + 0.612244898

Combine like terms: -0.612244898 + 0.612244898 = 0.000000000
0.000000000 + 0.2040816327t + t2 = 0 + 0.612244898
0.2040816327t + t2 = 0 + 0.612244898

Combine like terms: 0 + 0.612244898 = 0.612244898
0.2040816327t + t2 = 0.612244898

The t term is t.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.2040816327t + 0.25 + t2 = 0.612244898 + 0.25

Reorder the terms:
0.25 + 0.2040816327t + t2 = 0.612244898 + 0.25

Combine like terms: 0.612244898 + 0.25 = 0.862244898
0.25 + 0.2040816327t + t2 = 0.862244898

Factor a perfect square on the left side:
(t + 0.5)(t + 0.5) = 0.862244898

Calculate the square root of the right side: 0.928571429

Break this problem into two subproblems by setting 
(t + 0.5) equal to 0.928571429 and -0.928571429.

Subproblem 1

t + 0.5 = 0.928571429 Simplifying t + 0.5 = 0.928571429 Reorder the terms: 0.5 + t = 0.928571429 Solving 0.5 + t = 0.928571429 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = 0.928571429 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = 0.928571429 + -0.5 t = 0.928571429 + -0.5 Combine like terms: 0.928571429 + -0.5 = 0.428571429 t = 0.428571429 Simplifying t = 0.428571429

Subproblem 2

t + 0.5 = -0.928571429 Simplifying t + 0.5 = -0.928571429 Reorder the terms: 0.5 + t = -0.928571429 Solving 0.5 + t = -0.928571429 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = -0.928571429 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = -0.928571429 + -0.5 t = -0.928571429 + -0.5 Combine like terms: -0.928571429 + -0.5 = -1.428571429 t = -1.428571429 Simplifying t = -1.428571429

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.428571429, -1.428571429}

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