28y+(y*y)+12=36

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Solution for 28y+(y*y)+12=36 equation:


Simplifying
28y + (y * y) + 12 = 36

Multiply y * y
28y + (y2) + 12 = 36
28y + y2 + 12 = 36

Reorder the terms:
12 + 28y + y2 = 36

Solving
12 + 28y + y2 = 36

Solving for variable 'y'.

Reorder the terms:
12 + -36 + 28y + y2 = 36 + -36

Combine like terms: 12 + -36 = -24
-24 + 28y + y2 = 36 + -36

Combine like terms: 36 + -36 = 0
-24 + 28y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '24' to each side of the equation.
-24 + 28y + 24 + y2 = 0 + 24

Reorder the terms:
-24 + 24 + 28y + y2 = 0 + 24

Combine like terms: -24 + 24 = 0
0 + 28y + y2 = 0 + 24
28y + y2 = 0 + 24

Combine like terms: 0 + 24 = 24
28y + y2 = 24

The y term is 28y.  Take half its coefficient (14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
28y + 196 + y2 = 24 + 196

Reorder the terms:
196 + 28y + y2 = 24 + 196

Combine like terms: 24 + 196 = 220
196 + 28y + y2 = 220

Factor a perfect square on the left side:
(y + 14)(y + 14) = 220

Calculate the square root of the right side: 14.832396974

Break this problem into two subproblems by setting 
(y + 14) equal to 14.832396974 and -14.832396974.

Subproblem 1

y + 14 = 14.832396974 Simplifying y + 14 = 14.832396974 Reorder the terms: 14 + y = 14.832396974 Solving 14 + y = 14.832396974 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + y = 14.832396974 + -14 Combine like terms: 14 + -14 = 0 0 + y = 14.832396974 + -14 y = 14.832396974 + -14 Combine like terms: 14.832396974 + -14 = 0.832396974 y = 0.832396974 Simplifying y = 0.832396974

Subproblem 2

y + 14 = -14.832396974 Simplifying y + 14 = -14.832396974 Reorder the terms: 14 + y = -14.832396974 Solving 14 + y = -14.832396974 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + y = -14.832396974 + -14 Combine like terms: 14 + -14 = 0 0 + y = -14.832396974 + -14 y = -14.832396974 + -14 Combine like terms: -14.832396974 + -14 = -28.832396974 y = -28.832396974 Simplifying y = -28.832396974

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.832396974, -28.832396974}

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