y^2-29y=54

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Solution for y^2-29y=54 equation:


Simplifying
y2 + -29y = 54

Reorder the terms:
-29y + y2 = 54

Solving
-29y + y2 = 54

Solving for variable 'y'.

Reorder the terms:
-54 + -29y + y2 = 54 + -54

Combine like terms: 54 + -54 = 0
-54 + -29y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '54' to each side of the equation.
-54 + -29y + 54 + y2 = 0 + 54

Reorder the terms:
-54 + 54 + -29y + y2 = 0 + 54

Combine like terms: -54 + 54 = 0
0 + -29y + y2 = 0 + 54
-29y + y2 = 0 + 54

Combine like terms: 0 + 54 = 54
-29y + y2 = 54

The y term is -29y.  Take half its coefficient (-14.5).
Square it (210.25) and add it to both sides.

Add '210.25' to each side of the equation.
-29y + 210.25 + y2 = 54 + 210.25

Reorder the terms:
210.25 + -29y + y2 = 54 + 210.25

Combine like terms: 54 + 210.25 = 264.25
210.25 + -29y + y2 = 264.25

Factor a perfect square on the left side:
(y + -14.5)(y + -14.5) = 264.25

Calculate the square root of the right side: 16.255768207

Break this problem into two subproblems by setting 
(y + -14.5) equal to 16.255768207 and -16.255768207.

Subproblem 1

y + -14.5 = 16.255768207 Simplifying y + -14.5 = 16.255768207 Reorder the terms: -14.5 + y = 16.255768207 Solving -14.5 + y = 16.255768207 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '14.5' to each side of the equation. -14.5 + 14.5 + y = 16.255768207 + 14.5 Combine like terms: -14.5 + 14.5 = 0.0 0.0 + y = 16.255768207 + 14.5 y = 16.255768207 + 14.5 Combine like terms: 16.255768207 + 14.5 = 30.755768207 y = 30.755768207 Simplifying y = 30.755768207

Subproblem 2

y + -14.5 = -16.255768207 Simplifying y + -14.5 = -16.255768207 Reorder the terms: -14.5 + y = -16.255768207 Solving -14.5 + y = -16.255768207 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '14.5' to each side of the equation. -14.5 + 14.5 + y = -16.255768207 + 14.5 Combine like terms: -14.5 + 14.5 = 0.0 0.0 + y = -16.255768207 + 14.5 y = -16.255768207 + 14.5 Combine like terms: -16.255768207 + 14.5 = -1.755768207 y = -1.755768207 Simplifying y = -1.755768207

Solution

The solution to the problem is based on the solutions from the subproblems. y = {30.755768207, -1.755768207}

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