y(y+60)=240

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Solution for y(y+60)=240 equation:


Simplifying
y(y + 60) = 240

Reorder the terms:
y(60 + y) = 240
(60 * y + y * y) = 240
(60y + y2) = 240

Solving
60y + y2 = 240

Solving for variable 'y'.

Reorder the terms:
-240 + 60y + y2 = 240 + -240

Combine like terms: 240 + -240 = 0
-240 + 60y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '240' to each side of the equation.
-240 + 60y + 240 + y2 = 0 + 240

Reorder the terms:
-240 + 240 + 60y + y2 = 0 + 240

Combine like terms: -240 + 240 = 0
0 + 60y + y2 = 0 + 240
60y + y2 = 0 + 240

Combine like terms: 0 + 240 = 240
60y + y2 = 240

The y term is 60y.  Take half its coefficient (30).
Square it (900) and add it to both sides.

Add '900' to each side of the equation.
60y + 900 + y2 = 240 + 900

Reorder the terms:
900 + 60y + y2 = 240 + 900

Combine like terms: 240 + 900 = 1140
900 + 60y + y2 = 1140

Factor a perfect square on the left side:
(y + 30)(y + 30) = 1140

Calculate the square root of the right side: 33.763886032

Break this problem into two subproblems by setting 
(y + 30) equal to 33.763886032 and -33.763886032.

Subproblem 1

y + 30 = 33.763886032 Simplifying y + 30 = 33.763886032 Reorder the terms: 30 + y = 33.763886032 Solving 30 + y = 33.763886032 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + y = 33.763886032 + -30 Combine like terms: 30 + -30 = 0 0 + y = 33.763886032 + -30 y = 33.763886032 + -30 Combine like terms: 33.763886032 + -30 = 3.763886032 y = 3.763886032 Simplifying y = 3.763886032

Subproblem 2

y + 30 = -33.763886032 Simplifying y + 30 = -33.763886032 Reorder the terms: 30 + y = -33.763886032 Solving 30 + y = -33.763886032 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + y = -33.763886032 + -30 Combine like terms: 30 + -30 = 0 0 + y = -33.763886032 + -30 y = -33.763886032 + -30 Combine like terms: -33.763886032 + -30 = -63.763886032 y = -63.763886032 Simplifying y = -63.763886032

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.763886032, -63.763886032}

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