x^3+7x^2=30x

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Solution for x^3+7x^2=30x equation:


Simplifying
x3 + 7x2 = 30x

Reorder the terms:
7x2 + x3 = 30x

Solving
7x2 + x3 = 30x

Solving for variable 'x'.

Reorder the terms:
-30x + 7x2 + x3 = 30x + -30x

Combine like terms: 30x + -30x = 0
-30x + 7x2 + x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(-30 + 7x + x2) = 0

Factor a trinomial.
x((-10 + -1x)(3 + -1x)) = 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 '(-10 + -1x)' equal to zero and attempt to solve: Simplifying -10 + -1x = 0 Solving -10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -1x = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -1x = 0 + 10 -1x = 0 + 10 Combine like terms: 0 + 10 = 10 -1x = 10 Divide each side by '-1'. x = -10 Simplifying x = -10

Subproblem 3

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {0, -10, 3}

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