(y+1)(y+1)=(2y-2)(2-3)

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Solution for (y+1)(y+1)=(2y-2)(2-3) equation:


Simplifying
(y + 1)(y + 1) = (2y + -2)(2 + -3)

Reorder the terms:
(1 + y)(y + 1) = (2y + -2)(2 + -3)

Reorder the terms:
(1 + y)(1 + y) = (2y + -2)(2 + -3)

Multiply (1 + y) * (1 + y)
(1(1 + y) + y(1 + y)) = (2y + -2)(2 + -3)
((1 * 1 + y * 1) + y(1 + y)) = (2y + -2)(2 + -3)
((1 + 1y) + y(1 + y)) = (2y + -2)(2 + -3)
(1 + 1y + (1 * y + y * y)) = (2y + -2)(2 + -3)
(1 + 1y + (1y + y2)) = (2y + -2)(2 + -3)

Combine like terms: 1y + 1y = 2y
(1 + 2y + y2) = (2y + -2)(2 + -3)

Reorder the terms:
1 + 2y + y2 = (-2 + 2y)(2 + -3)

Combine like terms: 2 + -3 = -1
1 + 2y + y2 = (-2 + 2y)(-1)

Reorder the terms for easier multiplication:
1 + 2y + y2 = -1(-2 + 2y)
1 + 2y + y2 = (-2 * -1 + 2y * -1)
1 + 2y + y2 = (2 + -2y)

Solving
1 + 2y + y2 = 2 + -2y

Solving for variable 'y'.

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

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

Combine like terms: 2y + 2y = 4y
-1 + 4y + y2 = 2 + -2y + -2 + 2y

Reorder the terms:
-1 + 4y + y2 = 2 + -2 + -2y + 2y

Combine like terms: 2 + -2 = 0
-1 + 4y + y2 = 0 + -2y + 2y
-1 + 4y + y2 = -2y + 2y

Combine like terms: -2y + 2y = 0
-1 + 4y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 4y + 1 + y2 = 0 + 1

Reorder the terms:
-1 + 1 + 4y + y2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 4y + y2 = 0 + 1
4y + y2 = 0 + 1

Combine like terms: 0 + 1 = 1
4y + y2 = 1

The y term is 4y.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4y + 4 + y2 = 1 + 4

Reorder the terms:
4 + 4y + y2 = 1 + 4

Combine like terms: 1 + 4 = 5
4 + 4y + y2 = 5

Factor a perfect square on the left side:
(y + 2)(y + 2) = 5

Calculate the square root of the right side: 2.236067978

Break this problem into two subproblems by setting 
(y + 2) equal to 2.236067978 and -2.236067978.

Subproblem 1

y + 2 = 2.236067978 Simplifying y + 2 = 2.236067978 Reorder the terms: 2 + y = 2.236067978 Solving 2 + y = 2.236067978 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + y = 2.236067978 + -2 Combine like terms: 2 + -2 = 0 0 + y = 2.236067978 + -2 y = 2.236067978 + -2 Combine like terms: 2.236067978 + -2 = 0.236067978 y = 0.236067978 Simplifying y = 0.236067978

Subproblem 2

y + 2 = -2.236067978 Simplifying y + 2 = -2.236067978 Reorder the terms: 2 + y = -2.236067978 Solving 2 + y = -2.236067978 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + y = -2.236067978 + -2 Combine like terms: 2 + -2 = 0 0 + y = -2.236067978 + -2 y = -2.236067978 + -2 Combine like terms: -2.236067978 + -2 = -4.236067978 y = -4.236067978 Simplifying y = -4.236067978

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.236067978, -4.236067978}

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