3620+47.88t-4.9t^2=0

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Solution for 3620+47.88t-4.9t^2=0 equation:


Simplifying
3620 + 47.88t + -4.9t2 = 0

Solving
3620 + 47.88t + -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'.
-738.7755102 + -9.771428571t + t2 = 0

Move the constant term to the right:

Add '738.7755102' to each side of the equation.
-738.7755102 + -9.771428571t + 738.7755102 + t2 = 0 + 738.7755102

Reorder the terms:
-738.7755102 + 738.7755102 + -9.771428571t + t2 = 0 + 738.7755102

Combine like terms: -738.7755102 + 738.7755102 = 0.0000000
0.0000000 + -9.771428571t + t2 = 0 + 738.7755102
-9.771428571t + t2 = 0 + 738.7755102

Combine like terms: 0 + 738.7755102 = 738.7755102
-9.771428571t + t2 = 738.7755102

The t term is -9.771428571t.  Take half its coefficient (-4.885714286).
Square it (23.87020408) and add it to both sides.

Add '23.87020408' to each side of the equation.
-9.771428571t + 23.87020408 + t2 = 738.7755102 + 23.87020408

Reorder the terms:
23.87020408 + -9.771428571t + t2 = 738.7755102 + 23.87020408

Combine like terms: 738.7755102 + 23.87020408 = 762.64571428
23.87020408 + -9.771428571t + t2 = 762.64571428

Factor a perfect square on the left side:
(t + -4.885714286)(t + -4.885714286) = 762.64571428

Calculate the square root of the right side: 27.616040887

Break this problem into two subproblems by setting 
(t + -4.885714286) equal to 27.616040887 and -27.616040887.

Subproblem 1

t + -4.885714286 = 27.616040887 Simplifying t + -4.885714286 = 27.616040887 Reorder the terms: -4.885714286 + t = 27.616040887 Solving -4.885714286 + t = 27.616040887 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4.885714286' to each side of the equation. -4.885714286 + 4.885714286 + t = 27.616040887 + 4.885714286 Combine like terms: -4.885714286 + 4.885714286 = 0.000000000 0.000000000 + t = 27.616040887 + 4.885714286 t = 27.616040887 + 4.885714286 Combine like terms: 27.616040887 + 4.885714286 = 32.501755173 t = 32.501755173 Simplifying t = 32.501755173

Subproblem 2

t + -4.885714286 = -27.616040887 Simplifying t + -4.885714286 = -27.616040887 Reorder the terms: -4.885714286 + t = -27.616040887 Solving -4.885714286 + t = -27.616040887 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4.885714286' to each side of the equation. -4.885714286 + 4.885714286 + t = -27.616040887 + 4.885714286 Combine like terms: -4.885714286 + 4.885714286 = 0.000000000 0.000000000 + t = -27.616040887 + 4.885714286 t = -27.616040887 + 4.885714286 Combine like terms: -27.616040887 + 4.885714286 = -22.730326601 t = -22.730326601 Simplifying t = -22.730326601

Solution

The solution to the problem is based on the solutions from the subproblems. t = {32.501755173, -22.730326601}

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