2t^2-16t-1=0

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Solution for 2t^2-16t-1=0 equation:


Simplifying
2t2 + -16t + -1 = 0

Reorder the terms:
-1 + -16t + 2t2 = 0

Solving
-1 + -16t + 2t2 = 0

Solving for variable 't'.

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

Divide each side by '2'.
-0.5 + -8t + t2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + -8t + 0.5 + t2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + -8t + t2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + -8t + t2 = 0 + 0.5
-8t + t2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
-8t + t2 = 0.5

The t term is -8t.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8t + 16 + t2 = 0.5 + 16

Reorder the terms:
16 + -8t + t2 = 0.5 + 16

Combine like terms: 0.5 + 16 = 16.5
16 + -8t + t2 = 16.5

Factor a perfect square on the left side:
(t + -4)(t + -4) = 16.5

Calculate the square root of the right side: 4.062019202

Break this problem into two subproblems by setting 
(t + -4) equal to 4.062019202 and -4.062019202.

Subproblem 1

t + -4 = 4.062019202 Simplifying t + -4 = 4.062019202 Reorder the terms: -4 + t = 4.062019202 Solving -4 + t = 4.062019202 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + t = 4.062019202 + 4 Combine like terms: -4 + 4 = 0 0 + t = 4.062019202 + 4 t = 4.062019202 + 4 Combine like terms: 4.062019202 + 4 = 8.062019202 t = 8.062019202 Simplifying t = 8.062019202

Subproblem 2

t + -4 = -4.062019202 Simplifying t + -4 = -4.062019202 Reorder the terms: -4 + t = -4.062019202 Solving -4 + t = -4.062019202 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + t = -4.062019202 + 4 Combine like terms: -4 + 4 = 0 0 + t = -4.062019202 + 4 t = -4.062019202 + 4 Combine like terms: -4.062019202 + 4 = -0.062019202 t = -0.062019202 Simplifying t = -0.062019202

Solution

The solution to the problem is based on the solutions from the subproblems. t = {8.062019202, -0.062019202}

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