x^3-15x+5=4+2x^2+1

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Solution for x^3-15x+5=4+2x^2+1 equation:


Simplifying
x3 + -15x + 5 = 4 + 2x2 + 1

Reorder the terms:
5 + -15x + x3 = 4 + 2x2 + 1

Reorder the terms:
5 + -15x + x3 = 4 + 1 + 2x2

Combine like terms: 4 + 1 = 5
5 + -15x + x3 = 5 + 2x2

Add '-5' to each side of the equation.
5 + -15x + -5 + x3 = 5 + -5 + 2x2

Reorder the terms:
5 + -5 + -15x + x3 = 5 + -5 + 2x2

Combine like terms: 5 + -5 = 0
0 + -15x + x3 = 5 + -5 + 2x2
-15x + x3 = 5 + -5 + 2x2

Combine like terms: 5 + -5 = 0
-15x + x3 = 0 + 2x2
-15x + x3 = 2x2

Solving
-15x + x3 = 2x2

Solving for variable 'x'.

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

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

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

Factor a trinomial.
x((-3 + -1x)(5 + -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 '(-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

Subproblem 3

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 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 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {0, -3, 5}

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