Math Problem Statement

is it possible to factorize x^3 $$$$ +8\text{ by factor theorem?}

Solution

Yes, it is possible to factorize x3+8x^3 + 8 using the Factor Theorem.

The Factor Theorem states that if f(a)=0f(a) = 0, then (xa)(x - a) is a factor of the polynomial f(x)f(x).

Now, let's proceed with the factorization of x3+8x^3 + 8.

First, recognize that x3+8x^3 + 8 is a sum of cubes, because:

x3+8=x3+23x^3 + 8 = x^3 + 2^3

The sum of cubes formula is:

a3+b3=(a+b)(a2ab+b2)a^3 + b^3 = (a + b)(a^2 - ab + b^2)

In this case, a=xa = x and b=2b = 2, so we can factor x3+8x^3 + 8 as:

x3+8=(x+2)(x22x+4)x^3 + 8 = (x + 2)(x^2 - 2x + 4)

This is the factorized form of x3+8x^3 + 8.

Do you want further details on the Factor Theorem or the Sum of Cubes formula?

Here are some related questions you might find interesting:

  1. How does the Factor Theorem help in identifying roots of a polynomial?
  2. What is the difference between factoring a sum of cubes and factoring a difference of cubes?
  3. How can we apply synthetic division to check if a factor is correct?
  4. What would happen if the polynomial were x38x^3 - 8 instead?
  5. How do we verify the factorization (x+2)(x22x+4)(x + 2)(x^2 - 2x + 4)?

Tip: Always look for recognizable patterns like the sum or difference of cubes when dealing with polynomials of degree 3.

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Math Problem Analysis

Mathematical Concepts

Algebra
Factorization
Sum of Cubes

Formulas

Sum of cubes formula: a^3 + b^3 = (a + b)(a^2 - ab + b^2)

Theorems

Factor Theorem

Suitable Grade Level

Grades 9-12