6x^3+9x^3=42x

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Solution for 6x^3+9x^3=42x equation:


Simplifying
6x3 + 9x3 = 42x

Combine like terms: 6x3 + 9x3 = 15x3
15x3 = 42x

Solving
15x3 = 42x

Solving for variable 'x'.

Reorder the terms:
-42x + 15x3 = 42x + -42x

Combine like terms: 42x + -42x = 0
-42x + 15x3 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(-14 + 5x2) = 0

Ignore the factor 3.

Subproblem 1

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

Subproblem 2

Set the factor '(-14 + 5x2)' equal to zero and attempt to solve: Simplifying -14 + 5x2 = 0 Solving -14 + 5x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + 5x2 = 0 + 14 Combine like terms: -14 + 14 = 0 0 + 5x2 = 0 + 14 5x2 = 0 + 14 Combine like terms: 0 + 14 = 14 5x2 = 14 Divide each side by '5'. x2 = 2.8 Simplifying x2 = 2.8 Take the square root of each side: x = {-1.673320053, 1.673320053}

Solution

x = {0, -1.673320053, 1.673320053}

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