Select all expressions that are equivalent to x? + 4x. A. x(x + 4) B. (x + 2)2 C. (x + x)(x + 4) D. (x + 2)2 – 4

Question

Select all expressions that are equivalent to x? + 4x.
A. x(x + 4)
B. (x + 2)2
C. (x + x)(x + 4)
D. (x + 2)2 – 4
E. (x + 4)

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Nho 6 months 2021-07-20T20:51:13+00:00 2 Answers 4 views 0

Answers ( )

    0
    2021-07-20T20:52:33+00:00

    Answer:A
    Explanation:
    A is x^2+4
    B is 2x+4
    C is x^2 +4x + x^2+4x, which gives you x^4 +8x
    D is 2x+4-4, which is just 2x
    E is just x+4

    0
    2021-07-20T20:52:37+00:00

    Answer:

    A only

    Step-by-step explanation:

    you can’t get x^2 from any other choices

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