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27 December, 20:12

Which of the following polynomials is prime and cannot be factored?

A x (2) + 9x

B x (2) + 9

C x (2) - 9

D 2x (2) + 7x-9

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Answers (1)
  1. 27 December, 22:18
    0
    B. x² + 9

    Step-by-step explanation:

    Only B cannot be factored ... the rest can be factored as follows

    A. x² + 9x = x (x+9)

    C x² - 9 = x²-3² = (x+3) (x-3)

    D 2x² + 7x-9 = (2x+9) (x-1)
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