y^2-18y+225=0

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Solution for y^2-18y+225=0 equation:


Simplifying
y2 + -18y + 225 = 0

Reorder the terms:
225 + -18y + y2 = 0

Solving
225 + -18y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '-225' to each side of the equation.
225 + -18y + -225 + y2 = 0 + -225

Reorder the terms:
225 + -225 + -18y + y2 = 0 + -225

Combine like terms: 225 + -225 = 0
0 + -18y + y2 = 0 + -225
-18y + y2 = 0 + -225

Combine like terms: 0 + -225 = -225
-18y + y2 = -225

The y term is -18y.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18y + 81 + y2 = -225 + 81

Reorder the terms:
81 + -18y + y2 = -225 + 81

Combine like terms: -225 + 81 = -144
81 + -18y + y2 = -144

Factor a perfect square on the left side:
(y + -9)(y + -9) = -144

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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