2x^3+2x^2=15x+3x^2

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Solution for 2x^3+2x^2=15x+3x^2 equation:


Simplifying
2x3 + 2x2 = 15x + 3x2

Reorder the terms:
2x2 + 2x3 = 15x + 3x2

Solving
2x2 + 2x3 = 15x + 3x2

Solving for variable 'x'.

Reorder the terms:
-15x + 2x2 + -3x2 + 2x3 = 15x + 3x2 + -15x + -3x2

Combine like terms: 2x2 + -3x2 = -1x2
-15x + -1x2 + 2x3 = 15x + 3x2 + -15x + -3x2

Reorder the terms:
-15x + -1x2 + 2x3 = 15x + -15x + 3x2 + -3x2

Combine like terms: 15x + -15x = 0
-15x + -1x2 + 2x3 = 0 + 3x2 + -3x2
-15x + -1x2 + 2x3 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
-15x + -1x2 + 2x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(-15 + -1x + 2x2) = 0

Factor a trinomial.
x((-5 + -2x)(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 '(-5 + -2x)' equal to zero and attempt to solve: Simplifying -5 + -2x = 0 Solving -5 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -2x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -2x = 0 + 5 -2x = 0 + 5 Combine like terms: 0 + 5 = 5 -2x = 5 Divide each side by '-2'. x = -2.5 Simplifying x = -2.5

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, -2.5, 3}

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