y^2+2y-48=y

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Solution for y^2+2y-48=y equation:


Simplifying
y2 + 2y + -48 = y

Reorder the terms:
-48 + 2y + y2 = y

Solving
-48 + 2y + y2 = y

Solving for variable 'y'.

Reorder the terms:
-48 + 2y + -1y + y2 = y + -1y

Combine like terms: 2y + -1y = 1y
-48 + 1y + y2 = y + -1y

Combine like terms: y + -1y = 0
-48 + 1y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + 1y + 48 + y2 = 0 + 48

Reorder the terms:
-48 + 48 + 1y + y2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + 1y + y2 = 0 + 48
1y + y2 = 0 + 48

Combine like terms: 0 + 48 = 48
1y + y2 = 48

The y term is 1y.  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 = 48 + 0.25

Reorder the terms:
0.25 + y + y2 = 48 + 0.25

Combine like terms: 48 + 0.25 = 48.25
0.25 + y + y2 = 48.25

Factor a perfect square on the left side:
(y + 0.5)(y + 0.5) = 48.25

Calculate the square root of the right side: 6.946221995

Break this problem into two subproblems by setting 
(y + 0.5) equal to 6.946221995 and -6.946221995.

Subproblem 1

y + 0.5 = 6.946221995 Simplifying y + 0.5 = 6.946221995 Reorder the terms: 0.5 + y = 6.946221995 Solving 0.5 + y = 6.946221995 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 = 6.946221995 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = 6.946221995 + -0.5 y = 6.946221995 + -0.5 Combine like terms: 6.946221995 + -0.5 = 6.446221995 y = 6.446221995 Simplifying y = 6.446221995

Subproblem 2

y + 0.5 = -6.946221995 Simplifying y + 0.5 = -6.946221995 Reorder the terms: 0.5 + y = -6.946221995 Solving 0.5 + y = -6.946221995 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 = -6.946221995 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = -6.946221995 + -0.5 y = -6.946221995 + -0.5 Combine like terms: -6.946221995 + -0.5 = -7.446221995 y = -7.446221995 Simplifying y = -7.446221995

Solution

The solution to the problem is based on the solutions from the subproblems. y = {6.446221995, -7.446221995}

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