21x^3=28x^5

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Solution for 21x^3=28x^5 equation:


Simplifying
21x3 = 28x5

Solving
21x3 = 28x5

Solving for variable 'x'.

Combine like terms: 28x5 + -28x5 = 0
21x3 + -28x5 = 0

Factor out the Greatest Common Factor (GCF), '7x3'.
7x3(3 + -4x2) = 0

Ignore the factor 7.

Subproblem 1

Set the factor 'x3' equal to zero and attempt to solve: Simplifying x3 = 0 Solving x3 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x3 = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(3 + -4x2)' equal to zero and attempt to solve: Simplifying 3 + -4x2 = 0 Solving 3 + -4x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -4x2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4x2 = 0 + -3 -4x2 = 0 + -3 Combine like terms: 0 + -3 = -3 -4x2 = -3 Divide each side by '-4'. x2 = 0.75 Simplifying x2 = 0.75 Take the square root of each side: x = {-0.866025404, 0.866025404}

Solution

x = {-0.866025404, 0.866025404}

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