Which expression is a factor of 36×2−9? 6x−9 18x−9 6x−3 18x−3

Question

Which expression is a factor of 36×2−9?

6x−9

18x−9

6x−3

18x−3

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Latifah 4 years 2021-08-27T05:18:54+00:00 1 Answers 3 views 0

Answers ( )

  1. ngochoa
    0
    2021-08-27T05:20:26+00:00
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    Answer:

    18x – 9

    Step-by-step explanation:

    Factor the common factor of 9 first which gives 9(4x^{2} -1)

    4x^{2} - 1 is the difference of two squares and factors into (2x + 1)(2x – 1)

    The complete factorization of 36x^{2} -9 is 9(2x + 1)(2x – 1).  

    So 9(2x – 1) = 18x – 9 is a factor of the original expression.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )