81-16x^2y^4=0

Solution for 81-16x^2y^4=0 equation:

Simplifying
81 + -16x2y4 = 0

Solving
81 + -16x2y4 = 0

Solving for variable 'x'.

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

Add '-81' to each side of the equation.
81 + -81 + -16x2y4 = 0 + -81

Combine like terms: 81 + -81 = 0
0 + -16x2y4 = 0 + -81
-16x2y4 = 0 + -81

Combine like terms: 0 + -81 = -81
-16x2y4 = -81

Divide each side by '-16y4'.
x2 = 5.0625y-4

Simplifying
x2 = 5.0625y-4

Take the square root of each side:
x = {-2.25y-2, 2.25y-2}