-16t^2+16t+65=0

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Solution for -16t^2+16t+65=0 equation:


Simplifying
-16t2 + 16t + 65 = 0

Reorder the terms:
65 + 16t + -16t2 = 0

Solving
65 + 16t + -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'.
-4.0625 + -1t + t2 = 0

Move the constant term to the right:

Add '4.0625' to each side of the equation.
-4.0625 + -1t + 4.0625 + t2 = 0 + 4.0625

Reorder the terms:
-4.0625 + 4.0625 + -1t + t2 = 0 + 4.0625

Combine like terms: -4.0625 + 4.0625 = 0.0000
0.0000 + -1t + t2 = 0 + 4.0625
-1t + t2 = 0 + 4.0625

Combine like terms: 0 + 4.0625 = 4.0625
-1t + t2 = 4.0625

The t term is -1t.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1t + 0.25 + t2 = 4.0625 + 0.25

Reorder the terms:
0.25 + -1t + t2 = 4.0625 + 0.25

Combine like terms: 4.0625 + 0.25 = 4.3125
0.25 + -1t + t2 = 4.3125

Factor a perfect square on the left side:
(t + -0.5)(t + -0.5) = 4.3125

Calculate the square root of the right side: 2.076655966

Break this problem into two subproblems by setting 
(t + -0.5) equal to 2.076655966 and -2.076655966.

Subproblem 1

t + -0.5 = 2.076655966 Simplifying t + -0.5 = 2.076655966 Reorder the terms: -0.5 + t = 2.076655966 Solving -0.5 + t = 2.076655966 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + t = 2.076655966 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + t = 2.076655966 + 0.5 t = 2.076655966 + 0.5 Combine like terms: 2.076655966 + 0.5 = 2.576655966 t = 2.576655966 Simplifying t = 2.576655966

Subproblem 2

t + -0.5 = -2.076655966 Simplifying t + -0.5 = -2.076655966 Reorder the terms: -0.5 + t = -2.076655966 Solving -0.5 + t = -2.076655966 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + t = -2.076655966 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + t = -2.076655966 + 0.5 t = -2.076655966 + 0.5 Combine like terms: -2.076655966 + 0.5 = -1.576655966 t = -1.576655966 Simplifying t = -1.576655966

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.576655966, -1.576655966}

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