81b^3-16b=0

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Solution for 81b^3-16b=0 equation:


Simplifying
81b3 + -16b = 0

Reorder the terms:
-16b + 81b3 = 0

Solving
-16b + 81b3 = 0

Solving for variable 'b'.

Factor out the Greatest Common Factor (GCF), 'b'.
b(-16 + 81b2) = 0

Factor a difference between two squares.
b((4 + 9b)(-4 + 9b)) = 0

Subproblem 1

Set the factor 'b' equal to zero and attempt to solve: Simplifying b = 0 Solving b = 0 Move all terms containing b to the left, all other terms to the right. Simplifying b = 0

Subproblem 2

Set the factor '(4 + 9b)' equal to zero and attempt to solve: Simplifying 4 + 9b = 0 Solving 4 + 9b = 0 Move all terms containing b to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 9b = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 9b = 0 + -4 9b = 0 + -4 Combine like terms: 0 + -4 = -4 9b = -4 Divide each side by '9'. b = -0.4444444444 Simplifying b = -0.4444444444

Subproblem 3

Set the factor '(-4 + 9b)' equal to zero and attempt to solve: Simplifying -4 + 9b = 0 Solving -4 + 9b = 0 Move all terms containing b to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + 9b = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 9b = 0 + 4 9b = 0 + 4 Combine like terms: 0 + 4 = 4 9b = 4 Divide each side by '9'. b = 0.4444444444 Simplifying b = 0.4444444444

Solution

b = {0, -0.4444444444, 0.4444444444}

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