2y^2-18y+45=0

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Solution for 2y^2-18y+45=0 equation:


Simplifying
2y2 + -18y + 45 = 0

Reorder the terms:
45 + -18y + 2y2 = 0

Solving
45 + -18y + 2y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
22.5 + -9y + y2 = 0

Move the constant term to the right:

Add '-22.5' to each side of the equation.
22.5 + -9y + -22.5 + y2 = 0 + -22.5

Reorder the terms:
22.5 + -22.5 + -9y + y2 = 0 + -22.5

Combine like terms: 22.5 + -22.5 = 0.0
0.0 + -9y + y2 = 0 + -22.5
-9y + y2 = 0 + -22.5

Combine like terms: 0 + -22.5 = -22.5
-9y + y2 = -22.5

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 = -22.5 + 20.25

Reorder the terms:
20.25 + -9y + y2 = -22.5 + 20.25

Combine like terms: -22.5 + 20.25 = -2.25
20.25 + -9y + y2 = -2.25

Factor a perfect square on the left side:
(y + -4.5)(y + -4.5) = -2.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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