18x^3-8x=7x^2

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Solution for 18x^3-8x=7x^2 equation:


Simplifying
18x3 + -8x = 7x2

Reorder the terms:
-8x + 18x3 = 7x2

Solving
-8x + 18x3 = 7x2

Solving for variable 'x'.

Reorder the terms:
-8x + -7x2 + 18x3 = 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
-8x + -7x2 + 18x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(-8 + -7x + 18x2) = 0

Factor a trinomial.
x((-1 + -2x)(8 + -9x)) = 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 '(-1 + -2x)' equal to zero and attempt to solve: Simplifying -1 + -2x = 0 Solving -1 + -2x = 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 + -2x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2x = 0 + 1 -2x = 0 + 1 Combine like terms: 0 + 1 = 1 -2x = 1 Divide each side by '-2'. x = -0.5 Simplifying x = -0.5

Subproblem 3

Set the factor '(8 + -9x)' equal to zero and attempt to solve: Simplifying 8 + -9x = 0 Solving 8 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -9x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -9x = 0 + -8 -9x = 0 + -8 Combine like terms: 0 + -8 = -8 -9x = -8 Divide each side by '-9'. x = 0.8888888889 Simplifying x = 0.8888888889

Solution

x = {0, -0.5, 0.8888888889}

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