4.9t^2+3t=5.2

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Solution for 4.9t^2+3t=5.2 equation:


Simplifying
4.9t2 + 3t = 5.2

Reorder the terms:
3t + 4.9t2 = 5.2

Solving
3t + 4.9t2 = 5.2

Solving for variable 't'.

Reorder the terms:
-5.2 + 3t + 4.9t2 = 5.2 + -5.2

Combine like terms: 5.2 + -5.2 = 0.0
-5.2 + 3t + 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'.
-1.06122449 + 0.612244898t + t2 = 0

Move the constant term to the right:

Add '1.06122449' to each side of the equation.
-1.06122449 + 0.612244898t + 1.06122449 + t2 = 0 + 1.06122449

Reorder the terms:
-1.06122449 + 1.06122449 + 0.612244898t + t2 = 0 + 1.06122449

Combine like terms: -1.06122449 + 1.06122449 = 0.00000000
0.00000000 + 0.612244898t + t2 = 0 + 1.06122449
0.612244898t + t2 = 0 + 1.06122449

Combine like terms: 0 + 1.06122449 = 1.06122449
0.612244898t + t2 = 1.06122449

The t term is 0.612244898t.  Take half its coefficient (0.306122449).
Square it (0.09371095378) and add it to both sides.

Add '0.09371095378' to each side of the equation.
0.612244898t + 0.09371095378 + t2 = 1.06122449 + 0.09371095378

Reorder the terms:
0.09371095378 + 0.612244898t + t2 = 1.06122449 + 0.09371095378

Combine like terms: 1.06122449 + 0.09371095378 = 1.15493544378
0.09371095378 + 0.612244898t + t2 = 1.15493544378

Factor a perfect square on the left side:
(t + 0.306122449)(t + 0.306122449) = 1.15493544378

Calculate the square root of the right side: 1.074679228

Break this problem into two subproblems by setting 
(t + 0.306122449) equal to 1.074679228 and -1.074679228.

Subproblem 1

t + 0.306122449 = 1.074679228 Simplifying t + 0.306122449 = 1.074679228 Reorder the terms: 0.306122449 + t = 1.074679228 Solving 0.306122449 + t = 1.074679228 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.306122449' to each side of the equation. 0.306122449 + -0.306122449 + t = 1.074679228 + -0.306122449 Combine like terms: 0.306122449 + -0.306122449 = 0.000000000 0.000000000 + t = 1.074679228 + -0.306122449 t = 1.074679228 + -0.306122449 Combine like terms: 1.074679228 + -0.306122449 = 0.768556779 t = 0.768556779 Simplifying t = 0.768556779

Subproblem 2

t + 0.306122449 = -1.074679228 Simplifying t + 0.306122449 = -1.074679228 Reorder the terms: 0.306122449 + t = -1.074679228 Solving 0.306122449 + t = -1.074679228 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.306122449' to each side of the equation. 0.306122449 + -0.306122449 + t = -1.074679228 + -0.306122449 Combine like terms: 0.306122449 + -0.306122449 = 0.000000000 0.000000000 + t = -1.074679228 + -0.306122449 t = -1.074679228 + -0.306122449 Combine like terms: -1.074679228 + -0.306122449 = -1.380801677 t = -1.380801677 Simplifying t = -1.380801677

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.768556779, -1.380801677}

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