81x^4-64x^2=0

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Solution for 81x^4-64x^2=0 equation:


Simplifying
81x4 + -64x2 = 0

Reorder the terms:
-64x2 + 81x4 = 0

Solving
-64x2 + 81x4 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x2'.
x2(-64 + 81x2) = 0

Factor a difference between two squares.
x2((8 + 9x)(-8 + 9x)) = 0

Subproblem 1

Set the factor 'x2' equal to zero and attempt to solve: Simplifying x2 = 0 Solving x2 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x2 = 0 Take the square root of each side: x = {0}

Subproblem 2

Set the factor '(8 + 9x)' equal to zero and attempt to solve: Simplifying 8 + 9x = 0 Solving 8 + 9x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 9x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 9x = 0 + -8 9x = 0 + -8 Combine like terms: 0 + -8 = -8 9x = -8 Divide each side by '9'. x = -0.8888888889 Simplifying x = -0.8888888889

Subproblem 3

Set the factor '(-8 + 9x)' equal to zero and attempt to solve: Simplifying -8 + 9x = 0 Solving -8 + 9x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + 9x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + 9x = 0 + 8 9x = 0 + 8 Combine like terms: 0 + 8 = 8 9x = 8 Divide each side by '9'. x = 0.8888888889 Simplifying x = 0.8888888889

Solution

x = {0, -0.8888888889, 0.8888888889}

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