3p^3=21p

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Solution for 3p^3=21p equation:


Simplifying
3p3 = 21p

Solving
3p3 = 21p

Solving for variable 'p'.

Reorder the terms:
-21p + 3p3 = 21p + -21p

Combine like terms: 21p + -21p = 0
-21p + 3p3 = 0

Factor out the Greatest Common Factor (GCF), '3p'.
3p(-7 + p2) = 0

Ignore the factor 3.

Subproblem 1

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

Subproblem 2

Set the factor '(-7 + p2)' equal to zero and attempt to solve: Simplifying -7 + p2 = 0 Solving -7 + p2 = 0 Move all terms containing p to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + p2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + p2 = 0 + 7 p2 = 0 + 7 Combine like terms: 0 + 7 = 7 p2 = 7 Simplifying p2 = 7 Take the square root of each side: p = {-2.645751311, 2.645751311}

Solution

p = {0, -2.645751311, 2.645751311}

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