-4.9t^2+24.5t+25=0

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Solution for -4.9t^2+24.5t+25=0 equation:


Simplifying
-4.9t2 + 24.5t + 25 = 0

Reorder the terms:
25 + 24.5t + -4.9t2 = 0

Solving
25 + 24.5t + -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'.
-5.102040816 + -5t + t2 = 0

Move the constant term to the right:

Add '5.102040816' to each side of the equation.
-5.102040816 + -5t + 5.102040816 + t2 = 0 + 5.102040816

Reorder the terms:
-5.102040816 + 5.102040816 + -5t + t2 = 0 + 5.102040816

Combine like terms: -5.102040816 + 5.102040816 = 0.000000000
0.000000000 + -5t + t2 = 0 + 5.102040816
-5t + t2 = 0 + 5.102040816

Combine like terms: 0 + 5.102040816 = 5.102040816
-5t + t2 = 5.102040816

The t term is -5t.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5t + 6.25 + t2 = 5.102040816 + 6.25

Reorder the terms:
6.25 + -5t + t2 = 5.102040816 + 6.25

Combine like terms: 5.102040816 + 6.25 = 11.352040816
6.25 + -5t + t2 = 11.352040816

Factor a perfect square on the left side:
(t + -2.5)(t + -2.5) = 11.352040816

Calculate the square root of the right side: 3.369278976

Break this problem into two subproblems by setting 
(t + -2.5) equal to 3.369278976 and -3.369278976.

Subproblem 1

t + -2.5 = 3.369278976 Simplifying t + -2.5 = 3.369278976 Reorder the terms: -2.5 + t = 3.369278976 Solving -2.5 + t = 3.369278976 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + t = 3.369278976 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + t = 3.369278976 + 2.5 t = 3.369278976 + 2.5 Combine like terms: 3.369278976 + 2.5 = 5.869278976 t = 5.869278976 Simplifying t = 5.869278976

Subproblem 2

t + -2.5 = -3.369278976 Simplifying t + -2.5 = -3.369278976 Reorder the terms: -2.5 + t = -3.369278976 Solving -2.5 + t = -3.369278976 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + t = -3.369278976 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + t = -3.369278976 + 2.5 t = -3.369278976 + 2.5 Combine like terms: -3.369278976 + 2.5 = -0.869278976 t = -0.869278976 Simplifying t = -0.869278976

Solution

The solution to the problem is based on the solutions from the subproblems. t = {5.869278976, -0.869278976}

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