y(y-14)+4(y-18)=0

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Solution for y(y-14)+4(y-18)=0 equation:


Simplifying
y(y + -14) + 4(y + -18) = 0

Reorder the terms:
y(-14 + y) + 4(y + -18) = 0
(-14 * y + y * y) + 4(y + -18) = 0
(-14y + y2) + 4(y + -18) = 0

Reorder the terms:
-14y + y2 + 4(-18 + y) = 0
-14y + y2 + (-18 * 4 + y * 4) = 0
-14y + y2 + (-72 + 4y) = 0

Reorder the terms:
-72 + -14y + 4y + y2 = 0

Combine like terms: -14y + 4y = -10y
-72 + -10y + y2 = 0

Solving
-72 + -10y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '72' to each side of the equation.
-72 + -10y + 72 + y2 = 0 + 72

Reorder the terms:
-72 + 72 + -10y + y2 = 0 + 72

Combine like terms: -72 + 72 = 0
0 + -10y + y2 = 0 + 72
-10y + y2 = 0 + 72

Combine like terms: 0 + 72 = 72
-10y + y2 = 72

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 = 72 + 25

Reorder the terms:
25 + -10y + y2 = 72 + 25

Combine like terms: 72 + 25 = 97
25 + -10y + y2 = 97

Factor a perfect square on the left side:
(y + -5)(y + -5) = 97

Calculate the square root of the right side: 9.848857802

Break this problem into two subproblems by setting 
(y + -5) equal to 9.848857802 and -9.848857802.

Subproblem 1

y + -5 = 9.848857802 Simplifying y + -5 = 9.848857802 Reorder the terms: -5 + y = 9.848857802 Solving -5 + y = 9.848857802 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 = 9.848857802 + 5 Combine like terms: -5 + 5 = 0 0 + y = 9.848857802 + 5 y = 9.848857802 + 5 Combine like terms: 9.848857802 + 5 = 14.848857802 y = 14.848857802 Simplifying y = 14.848857802

Subproblem 2

y + -5 = -9.848857802 Simplifying y + -5 = -9.848857802 Reorder the terms: -5 + y = -9.848857802 Solving -5 + y = -9.848857802 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 = -9.848857802 + 5 Combine like terms: -5 + 5 = 0 0 + y = -9.848857802 + 5 y = -9.848857802 + 5 Combine like terms: -9.848857802 + 5 = -4.848857802 y = -4.848857802 Simplifying y = -4.848857802

Solution

The solution to the problem is based on the solutions from the subproblems. y = {14.848857802, -4.848857802}

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