(4y-5-y^2)+(6y+2y^2-2)=

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Solution for (4y-5-y^2)+(6y+2y^2-2)= equation:


Simplifying
(4y + -5 + -1y2) + (6y + 2y2 + -2) = 0

Reorder the terms:
(-5 + 4y + -1y2) + (6y + 2y2 + -2) = 0

Remove parenthesis around (-5 + 4y + -1y2)
-5 + 4y + -1y2 + (6y + 2y2 + -2) = 0

Reorder the terms:
-5 + 4y + -1y2 + (-2 + 6y + 2y2) = 0

Remove parenthesis around (-2 + 6y + 2y2)
-5 + 4y + -1y2 + -2 + 6y + 2y2 = 0

Reorder the terms:
-5 + -2 + 4y + 6y + -1y2 + 2y2 = 0

Combine like terms: -5 + -2 = -7
-7 + 4y + 6y + -1y2 + 2y2 = 0

Combine like terms: 4y + 6y = 10y
-7 + 10y + -1y2 + 2y2 = 0

Combine like terms: -1y2 + 2y2 = 1y2
-7 + 10y + 1y2 = 0

Solving
-7 + 10y + 1y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + 10y + 7 + y2 = 0 + 7

Reorder the terms:
-7 + 7 + 10y + y2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 10y + y2 = 0 + 7
10y + y2 = 0 + 7

Combine like terms: 0 + 7 = 7
10y + y2 = 7

The y term is 10y.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10y + 25 + y2 = 7 + 25

Reorder the terms:
25 + 10y + y2 = 7 + 25

Combine like terms: 7 + 25 = 32
25 + 10y + y2 = 32

Factor a perfect square on the left side:
(y + 5)(y + 5) = 32

Calculate the square root of the right side: 5.656854249

Break this problem into two subproblems by setting 
(y + 5) equal to 5.656854249 and -5.656854249.

Subproblem 1

y + 5 = 5.656854249 Simplifying y + 5 = 5.656854249 Reorder the terms: 5 + y = 5.656854249 Solving 5 + y = 5.656854249 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + y = 5.656854249 + -5 Combine like terms: 5 + -5 = 0 0 + y = 5.656854249 + -5 y = 5.656854249 + -5 Combine like terms: 5.656854249 + -5 = 0.656854249 y = 0.656854249 Simplifying y = 0.656854249

Subproblem 2

y + 5 = -5.656854249 Simplifying y + 5 = -5.656854249 Reorder the terms: 5 + y = -5.656854249 Solving 5 + y = -5.656854249 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + y = -5.656854249 + -5 Combine like terms: 5 + -5 = 0 0 + y = -5.656854249 + -5 y = -5.656854249 + -5 Combine like terms: -5.656854249 + -5 = -10.656854249 y = -10.656854249 Simplifying y = -10.656854249

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.656854249, -10.656854249}

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