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OpenStudy (anonymous):
Which of the following is a factor of x^3 - 729? Choose one answer. a. x - 9 b. x + 9 c. x^2 + 18x + 81 d. None of the above
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OpenStudy (anonymous):
x-9
OpenStudy (anonymous):
this is a difference of cubes, however the equation takes on this form: (X^3 – A^3) = (X – A) * (X^2 + AX + A^2) Therefore your solution is (X - 9) * ( X^2 + 9X + 81)
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