.5t=-4.9t^2+40t+3

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Solution for .5t=-4.9t^2+40t+3 equation:


Simplifying
0.5t = -4.9t2 + 40t + 3

Reorder the terms:
0.5t = 3 + 40t + -4.9t2

Solving
0.5t = 3 + 40t + -4.9t2

Solving for variable 't'.

Reorder the terms:
-3 + 0.5t + -40t + 4.9t2 = 3 + 40t + -4.9t2 + -3 + -40t + 4.9t2

Combine like terms: 0.5t + -40t = -39.5t
-3 + -39.5t + 4.9t2 = 3 + 40t + -4.9t2 + -3 + -40t + 4.9t2

Reorder the terms:
-3 + -39.5t + 4.9t2 = 3 + -3 + 40t + -40t + -4.9t2 + 4.9t2

Combine like terms: 3 + -3 = 0
-3 + -39.5t + 4.9t2 = 0 + 40t + -40t + -4.9t2 + 4.9t2
-3 + -39.5t + 4.9t2 = 40t + -40t + -4.9t2 + 4.9t2

Combine like terms: 40t + -40t = 0
-3 + -39.5t + 4.9t2 = 0 + -4.9t2 + 4.9t2
-3 + -39.5t + 4.9t2 = -4.9t2 + 4.9t2

Combine like terms: -4.9t2 + 4.9t2 = 0.0
-3 + -39.5t + 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'.
-0.612244898 + -8.06122449t + t2 = 0

Move the constant term to the right:

Add '0.612244898' to each side of the equation.
-0.612244898 + -8.06122449t + 0.612244898 + t2 = 0 + 0.612244898

Reorder the terms:
-0.612244898 + 0.612244898 + -8.06122449t + t2 = 0 + 0.612244898

Combine like terms: -0.612244898 + 0.612244898 = 0.000000000
0.000000000 + -8.06122449t + t2 = 0 + 0.612244898
-8.06122449t + t2 = 0 + 0.612244898

Combine like terms: 0 + 0.612244898 = 0.612244898
-8.06122449t + t2 = 0.612244898

The t term is -8.06122449t.  Take half its coefficient (-4.030612245).
Square it (16.24583507) and add it to both sides.

Add '16.24583507' to each side of the equation.
-8.06122449t + 16.24583507 + t2 = 0.612244898 + 16.24583507

Reorder the terms:
16.24583507 + -8.06122449t + t2 = 0.612244898 + 16.24583507

Combine like terms: 0.612244898 + 16.24583507 = 16.858079968
16.24583507 + -8.06122449t + t2 = 16.858079968

Factor a perfect square on the left side:
(t + -4.030612245)(t + -4.030612245) = 16.858079968

Calculate the square root of the right side: 4.105859224

Break this problem into two subproblems by setting 
(t + -4.030612245) equal to 4.105859224 and -4.105859224.

Subproblem 1

t + -4.030612245 = 4.105859224 Simplifying t + -4.030612245 = 4.105859224 Reorder the terms: -4.030612245 + t = 4.105859224 Solving -4.030612245 + t = 4.105859224 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4.030612245' to each side of the equation. -4.030612245 + 4.030612245 + t = 4.105859224 + 4.030612245 Combine like terms: -4.030612245 + 4.030612245 = 0.000000000 0.000000000 + t = 4.105859224 + 4.030612245 t = 4.105859224 + 4.030612245 Combine like terms: 4.105859224 + 4.030612245 = 8.136471469 t = 8.136471469 Simplifying t = 8.136471469

Subproblem 2

t + -4.030612245 = -4.105859224 Simplifying t + -4.030612245 = -4.105859224 Reorder the terms: -4.030612245 + t = -4.105859224 Solving -4.030612245 + t = -4.105859224 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4.030612245' to each side of the equation. -4.030612245 + 4.030612245 + t = -4.105859224 + 4.030612245 Combine like terms: -4.030612245 + 4.030612245 = 0.000000000 0.000000000 + t = -4.105859224 + 4.030612245 t = -4.105859224 + 4.030612245 Combine like terms: -4.105859224 + 4.030612245 = -0.075246979 t = -0.075246979 Simplifying t = -0.075246979

Solution

The solution to the problem is based on the solutions from the subproblems. t = {8.136471469, -0.075246979}

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