0.81x^2+y=90

Solution for 0.81x^2+y=90 equation:

Simplifying
0.81x2 + y = 90

Solving
0.81x2 + y = 90

Solving for variable 'x'.

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

Add '-1y' to each side of the equation.
0.81x2 + y + -1y = 90 + -1y

Combine like terms: y + -1y = 0
0.81x2 + 0 = 90 + -1y
0.81x2 = 90 + -1y

Divide each side by '0.81'.
x2 = 111.1111111 + -1.234567901y

Simplifying
x2 = 111.1111111 + -1.234567901y

Reorder the terms:
-111.1111111 + x2 + 1.234567901y = 111.1111111 + -1.234567901y + -111.1111111 + 1.234567901y

Reorder the terms:
-111.1111111 + x2 + 1.234567901y = 111.1111111 + -111.1111111 + -1.234567901y + 1.234567901y

Combine like terms: 111.1111111 + -111.1111111 = 0.0000000
-111.1111111 + x2 + 1.234567901y = 0.0000000 + -1.234567901y + 1.234567901y
-111.1111111 + x2 + 1.234567901y = -1.234567901y + 1.234567901y

Combine like terms: -1.234567901y + 1.234567901y = 0.000000000
-111.1111111 + x2 + 1.234567901y = 0.000000000

The solution to this equation could not be determined.