-16t^2-8t+25=0

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Solution for -16t^2-8t+25=0 equation:


Simplifying
-16t2 + -8t + 25 = 0

Reorder the terms:
25 + -8t + -16t2 = 0

Solving
25 + -8t + -16t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-1.5625 + 0.5t + t2 = 0

Move the constant term to the right:

Add '1.5625' to each side of the equation.
-1.5625 + 0.5t + 1.5625 + t2 = 0 + 1.5625

Reorder the terms:
-1.5625 + 1.5625 + 0.5t + t2 = 0 + 1.5625

Combine like terms: -1.5625 + 1.5625 = 0.0000
0.0000 + 0.5t + t2 = 0 + 1.5625
0.5t + t2 = 0 + 1.5625

Combine like terms: 0 + 1.5625 = 1.5625
0.5t + t2 = 1.5625

The t term is 0.5t.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5t + 0.0625 + t2 = 1.5625 + 0.0625

Reorder the terms:
0.0625 + 0.5t + t2 = 1.5625 + 0.0625

Combine like terms: 1.5625 + 0.0625 = 1.625
0.0625 + 0.5t + t2 = 1.625

Factor a perfect square on the left side:
(t + 0.25)(t + 0.25) = 1.625

Calculate the square root of the right side: 1.274754878

Break this problem into two subproblems by setting 
(t + 0.25) equal to 1.274754878 and -1.274754878.

Subproblem 1

t + 0.25 = 1.274754878 Simplifying t + 0.25 = 1.274754878 Reorder the terms: 0.25 + t = 1.274754878 Solving 0.25 + t = 1.274754878 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + t = 1.274754878 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + t = 1.274754878 + -0.25 t = 1.274754878 + -0.25 Combine like terms: 1.274754878 + -0.25 = 1.024754878 t = 1.024754878 Simplifying t = 1.024754878

Subproblem 2

t + 0.25 = -1.274754878 Simplifying t + 0.25 = -1.274754878 Reorder the terms: 0.25 + t = -1.274754878 Solving 0.25 + t = -1.274754878 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + t = -1.274754878 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + t = -1.274754878 + -0.25 t = -1.274754878 + -0.25 Combine like terms: -1.274754878 + -0.25 = -1.524754878 t = -1.524754878 Simplifying t = -1.524754878

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.024754878, -1.524754878}

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