3x^3+20x^2=7x

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Solution for 3x^3+20x^2=7x equation:


Simplifying
3x3 + 20x2 = 7x

Reorder the terms:
20x2 + 3x3 = 7x

Solving
20x2 + 3x3 = 7x

Solving for variable 'x'.

Reorder the terms:
-7x + 20x2 + 3x3 = 7x + -7x

Combine like terms: 7x + -7x = 0
-7x + 20x2 + 3x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(-7 + 20x + 3x2) = 0

Factor a trinomial.
x((-7 + -1x)(1 + -3x)) = 0

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 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 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 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 3

Set the factor '(1 + -3x)' equal to zero and attempt to solve: Simplifying 1 + -3x = 0 Solving 1 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -3x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x = 0 + -1 -3x = 0 + -1 Combine like terms: 0 + -1 = -1 -3x = -1 Divide each side by '-3'. x = 0.3333333333 Simplifying x = 0.3333333333

Solution

x = {0, -7, 0.3333333333}

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