y^2+y-1296=0

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Solution for y^2+y-1296=0 equation:


Simplifying
y2 + y + -1296 = 0

Reorder the terms:
-1296 + y + y2 = 0

Solving
-1296 + y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '1296' to each side of the equation.
-1296 + y + 1296 + y2 = 0 + 1296

Reorder the terms:
-1296 + 1296 + y + y2 = 0 + 1296

Combine like terms: -1296 + 1296 = 0
0 + y + y2 = 0 + 1296
y + y2 = 0 + 1296

Combine like terms: 0 + 1296 = 1296
y + y2 = 1296

The y term is y.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
y + 0.25 + y2 = 1296 + 0.25

Reorder the terms:
0.25 + y + y2 = 1296 + 0.25

Combine like terms: 1296 + 0.25 = 1296.25
0.25 + y + y2 = 1296.25

Factor a perfect square on the left side:
(y + 0.5)(y + 0.5) = 1296.25

Calculate the square root of the right side: 36.003472055

Break this problem into two subproblems by setting 
(y + 0.5) equal to 36.003472055 and -36.003472055.

Subproblem 1

y + 0.5 = 36.003472055 Simplifying y + 0.5 = 36.003472055 Reorder the terms: 0.5 + y = 36.003472055 Solving 0.5 + y = 36.003472055 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y = 36.003472055 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = 36.003472055 + -0.5 y = 36.003472055 + -0.5 Combine like terms: 36.003472055 + -0.5 = 35.503472055 y = 35.503472055 Simplifying y = 35.503472055

Subproblem 2

y + 0.5 = -36.003472055 Simplifying y + 0.5 = -36.003472055 Reorder the terms: 0.5 + y = -36.003472055 Solving 0.5 + y = -36.003472055 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y = -36.003472055 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = -36.003472055 + -0.5 y = -36.003472055 + -0.5 Combine like terms: -36.003472055 + -0.5 = -36.503472055 y = -36.503472055 Simplifying y = -36.503472055

Solution

The solution to the problem is based on the solutions from the subproblems. y = {35.503472055, -36.503472055}

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