4x^2-81y^4=

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


Simplifying
4x2 + -81y4 = 0

Solving
4x2 + -81y4 = 0

Solving for variable 'x'.

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

Add '81y4' to each side of the equation.
4x2 + -81y4 + 81y4 = 0 + 81y4

Combine like terms: -81y4 + 81y4 = 0
4x2 + 0 = 0 + 81y4
4x2 = 0 + 81y4
Remove the zero:
4x2 = 81y4

Divide each side by '4'.
x2 = 20.25y4

Simplifying
x2 = 20.25y4

Take the square root of each side:
x = {-4.5y2, 4.5y2}

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