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Simplifying
81x2 + -64y4 = 0
Solving
81x2 + -64y4 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '64y4' to each side of the equation.
81x2 + -64y4 + 64y4 = 0 + 64y4
Combine like terms: -64y4 + 64y4 = 0
81x2 + 0 = 0 + 64y4
81x2 = 0 + 64y4
Remove the zero:
81x2 = 64y4
Divide each side by '81'.
x2 = 0.7901234568y4
Simplifying
x2 = 0.7901234568y4
Take the square root of each side:
x = {-0.888888889y2, 0.888888889y2}
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