Y^2-4y-9=0

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Solution for Y^2-4y-9=0 equation: 


Simplifying
Y2 + -4y + -9 = 0

Reorder the terms:
-9 + Y2 + -4y = 0

Solving
-9 + Y2 + -4y = 0

Solving for variable 'Y'.

Move all terms containing Y to the left, all other terms to the right.

Add '9' to each side of the equation.
-9 + Y2 + 9 + -4y = 0 + 9

Reorder the terms:
-9 + 9 + Y2 + -4y = 0 + 9

Combine like terms: -9 + 9 = 0
0 + Y2 + -4y = 0 + 9
Y2 + -4y = 0 + 9

Combine like terms: 0 + 9 = 9
Y2 + -4y = 9

Add '4y' to each side of the equation.
Y2 + -4y + 4y = 9 + 4y

Combine like terms: -4y + 4y = 0
Y2 + 0 = 9 + 4y
Y2 = 9 + 4y

Simplifying
Y2 = 9 + 4y

Reorder the terms:
-9 + Y2 + -4y = 9 + 4y + -9 + -4y

Reorder the terms:
-9 + Y2 + -4y = 9 + -9 + 4y + -4y

Combine like terms: 9 + -9 = 0
-9 + Y2 + -4y = 0 + 4y + -4y
-9 + Y2 + -4y = 4y + -4y

Combine like terms: 4y + -4y = 0
-9 + Y2 + -4y = 0

The solution to this equation could not be determined.

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