16t^2-165t+87=0

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Solution for 16t^2-165t+87=0 equation:


Simplifying
16t2 + -165t + 87 = 0

Reorder the terms:
87 + -165t + 16t2 = 0

Solving
87 + -165t + 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 + -10.3125t + t2 = 0

Move the constant term to the right:

Add '-5.4375' to each side of the equation.
5.4375 + -10.3125t + -5.4375 + t2 = 0 + -5.4375

Reorder the terms:
5.4375 + -5.4375 + -10.3125t + t2 = 0 + -5.4375

Combine like terms: 5.4375 + -5.4375 = 0.0000
0.0000 + -10.3125t + t2 = 0 + -5.4375
-10.3125t + t2 = 0 + -5.4375

Combine like terms: 0 + -5.4375 = -5.4375
-10.3125t + t2 = -5.4375

The t term is -10.3125t.  Take half its coefficient (-5.15625).
Square it (26.58691406) and add it to both sides.

Add '26.58691406' to each side of the equation.
-10.3125t + 26.58691406 + t2 = -5.4375 + 26.58691406

Reorder the terms:
26.58691406 + -10.3125t + t2 = -5.4375 + 26.58691406

Combine like terms: -5.4375 + 26.58691406 = 21.14941406
26.58691406 + -10.3125t + t2 = 21.14941406

Factor a perfect square on the left side:
(t + -5.15625)(t + -5.15625) = 21.14941406

Calculate the square root of the right side: 4.59884921

Break this problem into two subproblems by setting 
(t + -5.15625) equal to 4.59884921 and -4.59884921.

Subproblem 1

t + -5.15625 = 4.59884921 Simplifying t + -5.15625 = 4.59884921 Reorder the terms: -5.15625 + t = 4.59884921 Solving -5.15625 + t = 4.59884921 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '5.15625' to each side of the equation. -5.15625 + 5.15625 + t = 4.59884921 + 5.15625 Combine like terms: -5.15625 + 5.15625 = 0.00000 0.00000 + t = 4.59884921 + 5.15625 t = 4.59884921 + 5.15625 Combine like terms: 4.59884921 + 5.15625 = 9.75509921 t = 9.75509921 Simplifying t = 9.75509921

Subproblem 2

t + -5.15625 = -4.59884921 Simplifying t + -5.15625 = -4.59884921 Reorder the terms: -5.15625 + t = -4.59884921 Solving -5.15625 + t = -4.59884921 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '5.15625' to each side of the equation. -5.15625 + 5.15625 + t = -4.59884921 + 5.15625 Combine like terms: -5.15625 + 5.15625 = 0.00000 0.00000 + t = -4.59884921 + 5.15625 t = -4.59884921 + 5.15625 Combine like terms: -4.59884921 + 5.15625 = 0.55740079 t = 0.55740079 Simplifying t = 0.55740079

Solution

The solution to the problem is based on the solutions from the subproblems. t = {9.75509921, 0.55740079}

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