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Factor completely:

1-z^(9)
Answer:

Factor completely:\newline1z9 1-z^{9} \newlineAnswer:

Full solution

Q. Factor completely:\newline1z9 1-z^{9} \newlineAnswer:
  1. Identify Factoring Type: Identify the type of factoring required for the expression 1z91 - z^{9}. The expression is a difference of two terms, and since one of the terms is 11, which is a perfect square (121^2), and the other term is z9z^{9}, which can be written as (z3)3(z^3)^3, we can recognize this as a difference of cubes: a3b3a^3 - b^3.
  2. Apply Difference of Cubes: Apply the difference of cubes formula to factor the expression.\newlineThe difference of cubes formula is a3b3=(ab)(a2+ab+b2)a^3 - b^3 = (a - b)(a^2 + ab + b^2). Here, a=1a = 1 and b=z3b = z^3.\newlineSo, 1z9=(1z3)(12+1z3+(z3)2)1 - z^{9} = (1 - z^3)(1^2 + 1\cdot z^3 + (z^3)^2).
  3. Simplify Factored Expression: Simplify the factored expression.\newline1z9=(1z3)(1+z3+z6)1 - z^{9} = (1 - z^{3})(1 + z^{3} + z^{6}).
  4. Recognize Simplified Term: Recognize that the term 1+z3+z61 + z^3 + z^6 is already simplified and cannot be factored further using real numbers.\newlineThe expression 1+z3+z61 + z^3 + z^6 does not have any common factors, nor does it fit any special factoring formulas such as difference of squares or sum/difference of cubes.
  5. Write Completely Factored Form: Write down the completely factored form of the original expression.\newlineThe completely factored form of 1z91 - z^{9} is (1z3)(1+z3+z6)(1 - z^{3})(1 + z^{3} + z^{6}).