Math Problem Statement

factor completely x-x^17

Solution

To factor xx17x - x^{17} completely, follow these steps:

Step 1: Factor out the greatest common factor (GCF)

The GCF in this case is xx, so we factor out xx from the expression:

xx17=x(1x16)x - x^{17} = x(1 - x^{16})

Step 2: Factor the difference of squares

Notice that 1x161 - x^{16} is a difference of squares, as 1x16=(1x8)(1+x8)1 - x^{16} = (1 - x^8)(1 + x^8). So, we factor it as:

x(1x16)=x(1x8)(1+x8)x(1 - x^{16}) = x(1 - x^8)(1 + x^8)

Step 3: Continue factoring 1x81 - x^8

Again, 1x81 - x^8 is a difference of squares:

1x8=(1x4)(1+x4)1 - x^8 = (1 - x^4)(1 + x^4)

Thus, we now have:

x(1x8)(1+x8)=x(1x4)(1+x4)(1+x8)x(1 - x^8)(1 + x^8) = x(1 - x^4)(1 + x^4)(1 + x^8)

Step 4: Continue factoring 1x41 - x^4

The term 1x41 - x^4 is another difference of squares:

1x4=(1x2)(1+x2)1 - x^4 = (1 - x^2)(1 + x^2)

Now, substitute this into the expression:

x(1x4)(1+x4)(1+x8)=x(1x2)(1+x2)(1+x4)(1+x8)x(1 - x^4)(1 + x^4)(1 + x^8) = x(1 - x^2)(1 + x^2)(1 + x^4)(1 + x^8)

Final factored form

The completely factored form of xx17x - x^{17} is:

x(1x2)(1+x2)(1+x4)(1+x8)x(1 - x^2)(1 + x^2)(1 + x^4)(1 + x^8)

Would you like more details or have any questions about this factorization?

Related Questions:

  1. How do you factor polynomials that involve higher powers?
  2. What are the rules for factoring the difference of squares?
  3. How can you recognize and factor a perfect square trinomial?
  4. What is the process for factoring a sum or difference of cubes?
  5. How do you apply factoring techniques to solve polynomial equations?

Tip:

Always check if you can factor further by applying the difference of squares or cubes to simplify higher powers of polynomials.

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Math Problem Analysis

Mathematical Concepts

Algebra
Polynomial Factoring
Difference of Squares

Formulas

a^2 - b^2 = (a - b)(a + b)

Theorems

Difference of Squares Theorem

Suitable Grade Level

Grades 9-12