16y^2-17y-1=0

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Solution for 16y^2-17y-1=0 equation:


Simplifying
16y2 + -17y + -1 = 0

Reorder the terms:
-1 + -17y + 16y2 = 0

Solving
-1 + -17y + 16y2 = 0

Solving for variable 'y'.

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

Divide each side by '16'.
-0.0625 + -1.0625y + y2 = 0

Move the constant term to the right:

Add '0.0625' to each side of the equation.
-0.0625 + -1.0625y + 0.0625 + y2 = 0 + 0.0625

Reorder the terms:
-0.0625 + 0.0625 + -1.0625y + y2 = 0 + 0.0625

Combine like terms: -0.0625 + 0.0625 = 0.0000
0.0000 + -1.0625y + y2 = 0 + 0.0625
-1.0625y + y2 = 0 + 0.0625

Combine like terms: 0 + 0.0625 = 0.0625
-1.0625y + y2 = 0.0625

The y term is -1.0625y.  Take half its coefficient (-0.53125).
Square it (0.2822265625) and add it to both sides.

Add '0.2822265625' to each side of the equation.
-1.0625y + 0.2822265625 + y2 = 0.0625 + 0.2822265625

Reorder the terms:
0.2822265625 + -1.0625y + y2 = 0.0625 + 0.2822265625

Combine like terms: 0.0625 + 0.2822265625 = 0.3447265625
0.2822265625 + -1.0625y + y2 = 0.3447265625

Factor a perfect square on the left side:
(y + -0.53125)(y + -0.53125) = 0.3447265625

Calculate the square root of the right side: 0.587134195

Break this problem into two subproblems by setting 
(y + -0.53125) equal to 0.587134195 and -0.587134195.

Subproblem 1

y + -0.53125 = 0.587134195 Simplifying y + -0.53125 = 0.587134195 Reorder the terms: -0.53125 + y = 0.587134195 Solving -0.53125 + y = 0.587134195 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.53125' to each side of the equation. -0.53125 + 0.53125 + y = 0.587134195 + 0.53125 Combine like terms: -0.53125 + 0.53125 = 0.00000 0.00000 + y = 0.587134195 + 0.53125 y = 0.587134195 + 0.53125 Combine like terms: 0.587134195 + 0.53125 = 1.118384195 y = 1.118384195 Simplifying y = 1.118384195

Subproblem 2

y + -0.53125 = -0.587134195 Simplifying y + -0.53125 = -0.587134195 Reorder the terms: -0.53125 + y = -0.587134195 Solving -0.53125 + y = -0.587134195 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.53125' to each side of the equation. -0.53125 + 0.53125 + y = -0.587134195 + 0.53125 Combine like terms: -0.53125 + 0.53125 = 0.00000 0.00000 + y = -0.587134195 + 0.53125 y = -0.587134195 + 0.53125 Combine like terms: -0.587134195 + 0.53125 = -0.055884195 y = -0.055884195 Simplifying y = -0.055884195

Solution

The solution to the problem is based on the solutions from the subproblems. y = {1.118384195, -0.055884195}

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