16y^2+32y-49=0

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Solution for 16y^2+32y-49=0 equation:


Simplifying
16y2 + 32y + -49 = 0

Reorder the terms:
-49 + 32y + 16y2 = 0

Solving
-49 + 32y + 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'.
-3.0625 + 2y + y2 = 0

Move the constant term to the right:

Add '3.0625' to each side of the equation.
-3.0625 + 2y + 3.0625 + y2 = 0 + 3.0625

Reorder the terms:
-3.0625 + 3.0625 + 2y + y2 = 0 + 3.0625

Combine like terms: -3.0625 + 3.0625 = 0.0000
0.0000 + 2y + y2 = 0 + 3.0625
2y + y2 = 0 + 3.0625

Combine like terms: 0 + 3.0625 = 3.0625
2y + y2 = 3.0625

The y term is 2y.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2y + 1 + y2 = 3.0625 + 1

Reorder the terms:
1 + 2y + y2 = 3.0625 + 1

Combine like terms: 3.0625 + 1 = 4.0625
1 + 2y + y2 = 4.0625

Factor a perfect square on the left side:
(y + 1)(y + 1) = 4.0625

Calculate the square root of the right side: 2.015564437

Break this problem into two subproblems by setting 
(y + 1) equal to 2.015564437 and -2.015564437.

Subproblem 1

y + 1 = 2.015564437 Simplifying y + 1 = 2.015564437 Reorder the terms: 1 + y = 2.015564437 Solving 1 + y = 2.015564437 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + y = 2.015564437 + -1 Combine like terms: 1 + -1 = 0 0 + y = 2.015564437 + -1 y = 2.015564437 + -1 Combine like terms: 2.015564437 + -1 = 1.015564437 y = 1.015564437 Simplifying y = 1.015564437

Subproblem 2

y + 1 = -2.015564437 Simplifying y + 1 = -2.015564437 Reorder the terms: 1 + y = -2.015564437 Solving 1 + y = -2.015564437 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + y = -2.015564437 + -1 Combine like terms: 1 + -1 = 0 0 + y = -2.015564437 + -1 y = -2.015564437 + -1 Combine like terms: -2.015564437 + -1 = -3.015564437 y = -3.015564437 Simplifying y = -3.015564437

Solution

The solution to the problem is based on the solutions from the subproblems. y = {1.015564437, -3.015564437}

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