2b^3-8b^2=64b

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Solution for 2b^3-8b^2=64b equation:


Simplifying
2b3 + -8b2 = 64b

Reorder the terms:
-8b2 + 2b3 = 64b

Solving
-8b2 + 2b3 = 64b

Solving for variable 'b'.

Reorder the terms:
-64b + -8b2 + 2b3 = 64b + -64b

Combine like terms: 64b + -64b = 0
-64b + -8b2 + 2b3 = 0

Factor out the Greatest Common Factor (GCF), '2b'.
2b(-32 + -4b + b2) = 0

Factor a trinomial.
2b((-4 + -1b)(8 + -1b)) = 0

Ignore the factor 2.

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 + -1b)' equal to zero and attempt to solve: Simplifying -4 + -1b = 0 Solving -4 + -1b = 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 + -1b = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1b = 0 + 4 -1b = 0 + 4 Combine like terms: 0 + 4 = 4 -1b = 4 Divide each side by '-1'. b = -4 Simplifying b = -4

Subproblem 3

Set the factor '(8 + -1b)' equal to zero and attempt to solve: Simplifying 8 + -1b = 0 Solving 8 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1b = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1b = 0 + -8 -1b = 0 + -8 Combine like terms: 0 + -8 = -8 -1b = -8 Divide each side by '-1'. b = 8 Simplifying b = 8

Solution

b = {0, -4, 8}

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