Find the coefficient of x^4 in the expansion of (x−9)^8 Please I need help!!

Question

Find the coefficient of x^4 in the expansion of (x−9)^8
Please I need help!!

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Mộc Miên 5 years 2021-07-30T20:27:28+00:00 1 Answers 11 views 0

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  1. binhan
    0
    2021-07-30T20:29:16+00:00
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    Answer:

    459270

    • is the coefficient

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