3+23.5t-4.9t^2=0

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Solution for 3+23.5t-4.9t^2=0 equation:


Simplifying
3 + 23.5t + -4.9t2 = 0

Solving
3 + 23.5t + -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 + -4.795918367t + t2 = 0

Move the constant term to the right:

Add '0.612244898' to each side of the equation.
-0.612244898 + -4.795918367t + 0.612244898 + t2 = 0 + 0.612244898

Reorder the terms:
-0.612244898 + 0.612244898 + -4.795918367t + t2 = 0 + 0.612244898

Combine like terms: -0.612244898 + 0.612244898 = 0.000000000
0.000000000 + -4.795918367t + t2 = 0 + 0.612244898
-4.795918367t + t2 = 0 + 0.612244898

Combine like terms: 0 + 0.612244898 = 0.612244898
-4.795918367t + t2 = 0.612244898

The t term is -4.795918367t.  Take half its coefficient (-2.397959184).
Square it (5.750208248) and add it to both sides.

Add '5.750208248' to each side of the equation.
-4.795918367t + 5.750208248 + t2 = 0.612244898 + 5.750208248

Reorder the terms:
5.750208248 + -4.795918367t + t2 = 0.612244898 + 5.750208248

Combine like terms: 0.612244898 + 5.750208248 = 6.362453146
5.750208248 + -4.795918367t + t2 = 6.362453146

Factor a perfect square on the left side:
(t + -2.397959184)(t + -2.397959184) = 6.362453146

Calculate the square root of the right side: 2.522390364

Break this problem into two subproblems by setting 
(t + -2.397959184) equal to 2.522390364 and -2.522390364.

Subproblem 1

t + -2.397959184 = 2.522390364 Simplifying t + -2.397959184 = 2.522390364 Reorder the terms: -2.397959184 + t = 2.522390364 Solving -2.397959184 + t = 2.522390364 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.397959184' to each side of the equation. -2.397959184 + 2.397959184 + t = 2.522390364 + 2.397959184 Combine like terms: -2.397959184 + 2.397959184 = 0.000000000 0.000000000 + t = 2.522390364 + 2.397959184 t = 2.522390364 + 2.397959184 Combine like terms: 2.522390364 + 2.397959184 = 4.920349548 t = 4.920349548 Simplifying t = 4.920349548

Subproblem 2

t + -2.397959184 = -2.522390364 Simplifying t + -2.397959184 = -2.522390364 Reorder the terms: -2.397959184 + t = -2.522390364 Solving -2.397959184 + t = -2.522390364 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.397959184' to each side of the equation. -2.397959184 + 2.397959184 + t = -2.522390364 + 2.397959184 Combine like terms: -2.397959184 + 2.397959184 = 0.000000000 0.000000000 + t = -2.522390364 + 2.397959184 t = -2.522390364 + 2.397959184 Combine like terms: -2.522390364 + 2.397959184 = -0.12443118 t = -0.12443118 Simplifying t = -0.12443118

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.920349548, -0.12443118}

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