16y^2-149y-102=0

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Solution for 16y^2-149y-102=0 equation:


Simplifying
16y2 + -149y + -102 = 0

Reorder the terms:
-102 + -149y + 16y2 = 0

Solving
-102 + -149y + 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'.
-6.375 + -9.3125y + y2 = 0

Move the constant term to the right:

Add '6.375' to each side of the equation.
-6.375 + -9.3125y + 6.375 + y2 = 0 + 6.375

Reorder the terms:
-6.375 + 6.375 + -9.3125y + y2 = 0 + 6.375

Combine like terms: -6.375 + 6.375 = 0.000
0.000 + -9.3125y + y2 = 0 + 6.375
-9.3125y + y2 = 0 + 6.375

Combine like terms: 0 + 6.375 = 6.375
-9.3125y + y2 = 6.375

The y term is -9.3125y.  Take half its coefficient (-4.65625).
Square it (21.68066406) and add it to both sides.

Add '21.68066406' to each side of the equation.
-9.3125y + 21.68066406 + y2 = 6.375 + 21.68066406

Reorder the terms:
21.68066406 + -9.3125y + y2 = 6.375 + 21.68066406

Combine like terms: 6.375 + 21.68066406 = 28.05566406
21.68066406 + -9.3125y + y2 = 28.05566406

Factor a perfect square on the left side:
(y + -4.65625)(y + -4.65625) = 28.05566406

Calculate the square root of the right side: 5.29675977

Break this problem into two subproblems by setting 
(y + -4.65625) equal to 5.29675977 and -5.29675977.

Subproblem 1

y + -4.65625 = 5.29675977 Simplifying y + -4.65625 = 5.29675977 Reorder the terms: -4.65625 + y = 5.29675977 Solving -4.65625 + y = 5.29675977 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '4.65625' to each side of the equation. -4.65625 + 4.65625 + y = 5.29675977 + 4.65625 Combine like terms: -4.65625 + 4.65625 = 0.00000 0.00000 + y = 5.29675977 + 4.65625 y = 5.29675977 + 4.65625 Combine like terms: 5.29675977 + 4.65625 = 9.95300977 y = 9.95300977 Simplifying y = 9.95300977

Subproblem 2

y + -4.65625 = -5.29675977 Simplifying y + -4.65625 = -5.29675977 Reorder the terms: -4.65625 + y = -5.29675977 Solving -4.65625 + y = -5.29675977 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '4.65625' to each side of the equation. -4.65625 + 4.65625 + y = -5.29675977 + 4.65625 Combine like terms: -4.65625 + 4.65625 = 0.00000 0.00000 + y = -5.29675977 + 4.65625 y = -5.29675977 + 4.65625 Combine like terms: -5.29675977 + 4.65625 = -0.64050977 y = -0.64050977 Simplifying y = -0.64050977

Solution

The solution to the problem is based on the solutions from the subproblems. y = {9.95300977, -0.64050977}

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