4.9t^2+4t-50=0

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Solution for 4.9t^2+4t-50=0 equation:


Simplifying
4.9t2 + 4t + -50 = 0

Reorder the terms:
-50 + 4t + 4.9t2 = 0

Solving
-50 + 4t + 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'.
-10.20408163 + 0.8163265306t + t2 = 0

Move the constant term to the right:

Add '10.20408163' to each side of the equation.
-10.20408163 + 0.8163265306t + 10.20408163 + t2 = 0 + 10.20408163

Reorder the terms:
-10.20408163 + 10.20408163 + 0.8163265306t + t2 = 0 + 10.20408163

Combine like terms: -10.20408163 + 10.20408163 = 0.00000000
0.00000000 + 0.8163265306t + t2 = 0 + 10.20408163
0.8163265306t + t2 = 0 + 10.20408163

Combine like terms: 0 + 10.20408163 = 10.20408163
0.8163265306t + t2 = 10.20408163

The t term is 0.8163265306t.  Take half its coefficient (0.4081632653).
Square it (0.1665972511) and add it to both sides.

Add '0.1665972511' to each side of the equation.
0.8163265306t + 0.1665972511 + t2 = 10.20408163 + 0.1665972511

Reorder the terms:
0.1665972511 + 0.8163265306t + t2 = 10.20408163 + 0.1665972511

Combine like terms: 10.20408163 + 0.1665972511 = 10.3706788811
0.1665972511 + 0.8163265306t + t2 = 10.3706788811

Factor a perfect square on the left side:
(t + 0.4081632653)(t + 0.4081632653) = 10.3706788811

Calculate the square root of the right side: 3.220353844

Break this problem into two subproblems by setting 
(t + 0.4081632653) equal to 3.220353844 and -3.220353844.

Subproblem 1

t + 0.4081632653 = 3.220353844 Simplifying t + 0.4081632653 = 3.220353844 Reorder the terms: 0.4081632653 + t = 3.220353844 Solving 0.4081632653 + t = 3.220353844 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.4081632653' to each side of the equation. 0.4081632653 + -0.4081632653 + t = 3.220353844 + -0.4081632653 Combine like terms: 0.4081632653 + -0.4081632653 = 0.0000000000 0.0000000000 + t = 3.220353844 + -0.4081632653 t = 3.220353844 + -0.4081632653 Combine like terms: 3.220353844 + -0.4081632653 = 2.8121905787 t = 2.8121905787 Simplifying t = 2.8121905787

Subproblem 2

t + 0.4081632653 = -3.220353844 Simplifying t + 0.4081632653 = -3.220353844 Reorder the terms: 0.4081632653 + t = -3.220353844 Solving 0.4081632653 + t = -3.220353844 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.4081632653' to each side of the equation. 0.4081632653 + -0.4081632653 + t = -3.220353844 + -0.4081632653 Combine like terms: 0.4081632653 + -0.4081632653 = 0.0000000000 0.0000000000 + t = -3.220353844 + -0.4081632653 t = -3.220353844 + -0.4081632653 Combine like terms: -3.220353844 + -0.4081632653 = -3.6285171093 t = -3.6285171093 Simplifying t = -3.6285171093

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.8121905787, -3.6285171093}

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