-16t^2+8t+87=0

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Solution for -16t^2+8t+87=0 equation:


Simplifying
-16t2 + 8t + 87 = 0

Reorder the terms:
87 + 8t + -16t2 = 0

Solving
87 + 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'.
-5.4375 + -0.5t + t2 = 0

Move the constant term to the right:

Add '5.4375' to each side of the equation.
-5.4375 + -0.5t + 5.4375 + t2 = 0 + 5.4375

Reorder the terms:
-5.4375 + 5.4375 + -0.5t + t2 = 0 + 5.4375

Combine like terms: -5.4375 + 5.4375 = 0.0000
0.0000 + -0.5t + t2 = 0 + 5.4375
-0.5t + t2 = 0 + 5.4375

Combine like terms: 0 + 5.4375 = 5.4375
-0.5t + t2 = 5.4375

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 = 5.4375 + 0.0625

Reorder the terms:
0.0625 + -0.5t + t2 = 5.4375 + 0.0625

Combine like terms: 5.4375 + 0.0625 = 5.5
0.0625 + -0.5t + t2 = 5.5

Factor a perfect square on the left side:
(t + -0.25)(t + -0.25) = 5.5

Calculate the square root of the right side: 2.34520788

Break this problem into two subproblems by setting 
(t + -0.25) equal to 2.34520788 and -2.34520788.

Subproblem 1

t + -0.25 = 2.34520788 Simplifying t + -0.25 = 2.34520788 Reorder the terms: -0.25 + t = 2.34520788 Solving -0.25 + t = 2.34520788 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 = 2.34520788 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + t = 2.34520788 + 0.25 t = 2.34520788 + 0.25 Combine like terms: 2.34520788 + 0.25 = 2.59520788 t = 2.59520788 Simplifying t = 2.59520788

Subproblem 2

t + -0.25 = -2.34520788 Simplifying t + -0.25 = -2.34520788 Reorder the terms: -0.25 + t = -2.34520788 Solving -0.25 + t = -2.34520788 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 = -2.34520788 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + t = -2.34520788 + 0.25 t = -2.34520788 + 0.25 Combine like terms: -2.34520788 + 0.25 = -2.09520788 t = -2.09520788 Simplifying t = -2.09520788

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.59520788, -2.09520788}

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