4t^2-17t-1=0

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Solution for 4t^2-17t-1=0 equation:


Simplifying
4t2 + -17t + -1 = 0

Reorder the terms:
-1 + -17t + 4t2 = 0

Solving
-1 + -17t + 4t2 = 0

Solving for variable 't'.

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

Divide each side by '4'.
-0.25 + -4.25t + t2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + -4.25t + 0.25 + t2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + -4.25t + t2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + -4.25t + t2 = 0 + 0.25
-4.25t + t2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
-4.25t + t2 = 0.25

The t term is -4.25t.  Take half its coefficient (-2.125).
Square it (4.515625) and add it to both sides.

Add '4.515625' to each side of the equation.
-4.25t + 4.515625 + t2 = 0.25 + 4.515625

Reorder the terms:
4.515625 + -4.25t + t2 = 0.25 + 4.515625

Combine like terms: 0.25 + 4.515625 = 4.765625
4.515625 + -4.25t + t2 = 4.765625

Factor a perfect square on the left side:
(t + -2.125)(t + -2.125) = 4.765625

Calculate the square root of the right side: 2.18303115

Break this problem into two subproblems by setting 
(t + -2.125) equal to 2.18303115 and -2.18303115.

Subproblem 1

t + -2.125 = 2.18303115 Simplifying t + -2.125 = 2.18303115 Reorder the terms: -2.125 + t = 2.18303115 Solving -2.125 + t = 2.18303115 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.125' to each side of the equation. -2.125 + 2.125 + t = 2.18303115 + 2.125 Combine like terms: -2.125 + 2.125 = 0.000 0.000 + t = 2.18303115 + 2.125 t = 2.18303115 + 2.125 Combine like terms: 2.18303115 + 2.125 = 4.30803115 t = 4.30803115 Simplifying t = 4.30803115

Subproblem 2

t + -2.125 = -2.18303115 Simplifying t + -2.125 = -2.18303115 Reorder the terms: -2.125 + t = -2.18303115 Solving -2.125 + t = -2.18303115 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.125' to each side of the equation. -2.125 + 2.125 + t = -2.18303115 + 2.125 Combine like terms: -2.125 + 2.125 = 0.000 0.000 + t = -2.18303115 + 2.125 t = -2.18303115 + 2.125 Combine like terms: -2.18303115 + 2.125 = -0.05803115 t = -0.05803115 Simplifying t = -0.05803115

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.30803115, -0.05803115}

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