-4.9t^2+4t+250=0

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Solution for -4.9t^2+4t+250=0 equation:


Simplifying
-4.9t2 + 4t + 250 = 0

Reorder the terms:
250 + 4t + -4.9t2 = 0

Solving
250 + 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'.
-51.02040816 + -0.8163265306t + t2 = 0

Move the constant term to the right:

Add '51.02040816' to each side of the equation.
-51.02040816 + -0.8163265306t + 51.02040816 + t2 = 0 + 51.02040816

Reorder the terms:
-51.02040816 + 51.02040816 + -0.8163265306t + t2 = 0 + 51.02040816

Combine like terms: -51.02040816 + 51.02040816 = 0.00000000
0.00000000 + -0.8163265306t + t2 = 0 + 51.02040816
-0.8163265306t + t2 = 0 + 51.02040816

Combine like terms: 0 + 51.02040816 = 51.02040816
-0.8163265306t + t2 = 51.02040816

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 = 51.02040816 + 0.1665972511

Reorder the terms:
0.1665972511 + -0.8163265306t + t2 = 51.02040816 + 0.1665972511

Combine like terms: 51.02040816 + 0.1665972511 = 51.1870054111
0.1665972511 + -0.8163265306t + t2 = 51.1870054111

Factor a perfect square on the left side:
(t + -0.4081632653)(t + -0.4081632653) = 51.1870054111

Calculate the square root of the right side: 7.154509446

Break this problem into two subproblems by setting 
(t + -0.4081632653) equal to 7.154509446 and -7.154509446.

Subproblem 1

t + -0.4081632653 = 7.154509446 Simplifying t + -0.4081632653 = 7.154509446 Reorder the terms: -0.4081632653 + t = 7.154509446 Solving -0.4081632653 + t = 7.154509446 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 = 7.154509446 + 0.4081632653 Combine like terms: -0.4081632653 + 0.4081632653 = 0.0000000000 0.0000000000 + t = 7.154509446 + 0.4081632653 t = 7.154509446 + 0.4081632653 Combine like terms: 7.154509446 + 0.4081632653 = 7.5626727113 t = 7.5626727113 Simplifying t = 7.5626727113

Subproblem 2

t + -0.4081632653 = -7.154509446 Simplifying t + -0.4081632653 = -7.154509446 Reorder the terms: -0.4081632653 + t = -7.154509446 Solving -0.4081632653 + t = -7.154509446 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 = -7.154509446 + 0.4081632653 Combine like terms: -0.4081632653 + 0.4081632653 = 0.0000000000 0.0000000000 + t = -7.154509446 + 0.4081632653 t = -7.154509446 + 0.4081632653 Combine like terms: -7.154509446 + 0.4081632653 = -6.7463461807 t = -6.7463461807 Simplifying t = -6.7463461807

Solution

The solution to the problem is based on the solutions from the subproblems. t = {7.5626727113, -6.7463461807}

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