y^2-8y+18=y-5

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Solution for y^2-8y+18=y-5 equation:


Simplifying
y2 + -8y + 18 = y + -5

Reorder the terms:
18 + -8y + y2 = y + -5

Reorder the terms:
18 + -8y + y2 = -5 + y

Solving
18 + -8y + y2 = -5 + y

Solving for variable 'y'.

Reorder the terms:
18 + 5 + -8y + -1y + y2 = -5 + y + 5 + -1y

Combine like terms: 18 + 5 = 23
23 + -8y + -1y + y2 = -5 + y + 5 + -1y

Combine like terms: -8y + -1y = -9y
23 + -9y + y2 = -5 + y + 5 + -1y

Reorder the terms:
23 + -9y + y2 = -5 + 5 + y + -1y

Combine like terms: -5 + 5 = 0
23 + -9y + y2 = 0 + y + -1y
23 + -9y + y2 = y + -1y

Combine like terms: y + -1y = 0
23 + -9y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-23' to each side of the equation.
23 + -9y + -23 + y2 = 0 + -23

Reorder the terms:
23 + -23 + -9y + y2 = 0 + -23

Combine like terms: 23 + -23 = 0
0 + -9y + y2 = 0 + -23
-9y + y2 = 0 + -23

Combine like terms: 0 + -23 = -23
-9y + y2 = -23

The y term is -9y.  Take half its coefficient (-4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
-9y + 20.25 + y2 = -23 + 20.25

Reorder the terms:
20.25 + -9y + y2 = -23 + 20.25

Combine like terms: -23 + 20.25 = -2.75
20.25 + -9y + y2 = -2.75

Factor a perfect square on the left side:
(y + -4.5)(y + -4.5) = -2.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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