16t^2-12t-25=0

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Solution for 16t^2-12t-25=0 equation:


Simplifying
16t2 + -12t + -25 = 0

Reorder the terms:
-25 + -12t + 16t2 = 0

Solving
-25 + -12t + 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 + -0.75t + t2 = 0

Move the constant term to the right:

Add '1.5625' to each side of the equation.
-1.5625 + -0.75t + 1.5625 + t2 = 0 + 1.5625

Reorder the terms:
-1.5625 + 1.5625 + -0.75t + t2 = 0 + 1.5625

Combine like terms: -1.5625 + 1.5625 = 0.0000
0.0000 + -0.75t + t2 = 0 + 1.5625
-0.75t + t2 = 0 + 1.5625

Combine like terms: 0 + 1.5625 = 1.5625
-0.75t + t2 = 1.5625

The t term is -0.75t.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75t + 0.140625 + t2 = 1.5625 + 0.140625

Reorder the terms:
0.140625 + -0.75t + t2 = 1.5625 + 0.140625

Combine like terms: 1.5625 + 0.140625 = 1.703125
0.140625 + -0.75t + t2 = 1.703125

Factor a perfect square on the left side:
(t + -0.375)(t + -0.375) = 1.703125

Calculate the square root of the right side: 1.305038314

Break this problem into two subproblems by setting 
(t + -0.375) equal to 1.305038314 and -1.305038314.

Subproblem 1

t + -0.375 = 1.305038314 Simplifying t + -0.375 = 1.305038314 Reorder the terms: -0.375 + t = 1.305038314 Solving -0.375 + t = 1.305038314 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + t = 1.305038314 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + t = 1.305038314 + 0.375 t = 1.305038314 + 0.375 Combine like terms: 1.305038314 + 0.375 = 1.680038314 t = 1.680038314 Simplifying t = 1.680038314

Subproblem 2

t + -0.375 = -1.305038314 Simplifying t + -0.375 = -1.305038314 Reorder the terms: -0.375 + t = -1.305038314 Solving -0.375 + t = -1.305038314 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + t = -1.305038314 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + t = -1.305038314 + 0.375 t = -1.305038314 + 0.375 Combine like terms: -1.305038314 + 0.375 = -0.930038314 t = -0.930038314 Simplifying t = -0.930038314

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.680038314, -0.930038314}

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