2x^2-y=9

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Solution for 2x^2-y=9 equation:


Simplifying
2x2 + -1y = 9

Solving
2x2 + -1y = 9

Solving for variable 'x'.

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

Add 'y' to each side of the equation.
2x2 + -1y + y = 9 + y

Combine like terms: -1y + y = 0
2x2 + 0 = 9 + y
2x2 = 9 + y

Divide each side by '2'.
x2 = 4.5 + 0.5y

Simplifying
x2 = 4.5 + 0.5y

Reorder the terms:
-4.5 + x2 + -0.5y = 4.5 + 0.5y + -4.5 + -0.5y

Reorder the terms:
-4.5 + x2 + -0.5y = 4.5 + -4.5 + 0.5y + -0.5y

Combine like terms: 4.5 + -4.5 = 0.0
-4.5 + x2 + -0.5y = 0.0 + 0.5y + -0.5y
-4.5 + x2 + -0.5y = 0.5y + -0.5y

Combine like terms: 0.5y + -0.5y = 0.0
-4.5 + x2 + -0.5y = 0.0

The solution to this equation could not be determined.

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