2b^3+72b=26b^2

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Solution for 2b^3+72b=26b^2 equation:


Simplifying
2b3 + 72b = 26b2

Reorder the terms:
72b + 2b3 = 26b2

Solving
72b + 2b3 = 26b2

Solving for variable 'b'.

Reorder the terms:
72b + -26b2 + 2b3 = 26b2 + -26b2

Combine like terms: 26b2 + -26b2 = 0
72b + -26b2 + 2b3 = 0

Factor out the Greatest Common Factor (GCF), '2b'.
2b(36 + -13b + b2) = 0

Factor a trinomial.
2b((4 + -1b)(9 + -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 '(9 + -1b)' equal to zero and attempt to solve: Simplifying 9 + -1b = 0 Solving 9 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1b = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1b = 0 + -9 -1b = 0 + -9 Combine like terms: 0 + -9 = -9 -1b = -9 Divide each side by '-1'. b = 9 Simplifying b = 9

Solution

b = {0, 4, 9}

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