4.9t^2-12t-60=0

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Solution for 4.9t^2-12t-60=0 equation:


Simplifying
4.9t2 + -12t + -60 = 0

Reorder the terms:
-60 + -12t + 4.9t2 = 0

Solving
-60 + -12t + 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'.
-12.24489796 + -2.448979592t + t2 = 0

Move the constant term to the right:

Add '12.24489796' to each side of the equation.
-12.24489796 + -2.448979592t + 12.24489796 + t2 = 0 + 12.24489796

Reorder the terms:
-12.24489796 + 12.24489796 + -2.448979592t + t2 = 0 + 12.24489796

Combine like terms: -12.24489796 + 12.24489796 = 0.00000000
0.00000000 + -2.448979592t + t2 = 0 + 12.24489796
-2.448979592t + t2 = 0 + 12.24489796

Combine like terms: 0 + 12.24489796 = 12.24489796
-2.448979592t + t2 = 12.24489796

The t term is -2.448979592t.  Take half its coefficient (-1.224489796).
Square it (1.499375261) and add it to both sides.

Add '1.499375261' to each side of the equation.
-2.448979592t + 1.499375261 + t2 = 12.24489796 + 1.499375261

Reorder the terms:
1.499375261 + -2.448979592t + t2 = 12.24489796 + 1.499375261

Combine like terms: 12.24489796 + 1.499375261 = 13.744273221
1.499375261 + -2.448979592t + t2 = 13.744273221

Factor a perfect square on the left side:
(t + -1.224489796)(t + -1.224489796) = 13.744273221

Calculate the square root of the right side: 3.707326964

Break this problem into two subproblems by setting 
(t + -1.224489796) equal to 3.707326964 and -3.707326964.

Subproblem 1

t + -1.224489796 = 3.707326964 Simplifying t + -1.224489796 = 3.707326964 Reorder the terms: -1.224489796 + t = 3.707326964 Solving -1.224489796 + t = 3.707326964 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.224489796' to each side of the equation. -1.224489796 + 1.224489796 + t = 3.707326964 + 1.224489796 Combine like terms: -1.224489796 + 1.224489796 = 0.000000000 0.000000000 + t = 3.707326964 + 1.224489796 t = 3.707326964 + 1.224489796 Combine like terms: 3.707326964 + 1.224489796 = 4.93181676 t = 4.93181676 Simplifying t = 4.93181676

Subproblem 2

t + -1.224489796 = -3.707326964 Simplifying t + -1.224489796 = -3.707326964 Reorder the terms: -1.224489796 + t = -3.707326964 Solving -1.224489796 + t = -3.707326964 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.224489796' to each side of the equation. -1.224489796 + 1.224489796 + t = -3.707326964 + 1.224489796 Combine like terms: -1.224489796 + 1.224489796 = 0.000000000 0.000000000 + t = -3.707326964 + 1.224489796 t = -3.707326964 + 1.224489796 Combine like terms: -3.707326964 + 1.224489796 = -2.482837168 t = -2.482837168 Simplifying t = -2.482837168

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.93181676, -2.482837168}

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