6x^3+9x^2=42x

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Solution for 6x^3+9x^2=42x equation:


Simplifying
6x3 + 9x2 = 42x

Reorder the terms:
9x2 + 6x3 = 42x

Solving
9x2 + 6x3 = 42x

Solving for variable 'x'.

Reorder the terms:
-42x + 9x2 + 6x3 = 42x + -42x

Combine like terms: 42x + -42x = 0
-42x + 9x2 + 6x3 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(-14 + 3x + 2x2) = 0

Factor a trinomial.
3x((-7 + -2x)(2 + -1x)) = 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 '(-7 + -2x)' equal to zero and attempt to solve: Simplifying -7 + -2x = 0 Solving -7 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -2x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -2x = 0 + 7 -2x = 0 + 7 Combine like terms: 0 + 7 = 7 -2x = 7 Divide each side by '-2'. x = -3.5 Simplifying x = -3.5

Subproblem 3

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

Solution

x = {0, -3.5, 2}

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