How can I calculate the zeros of x^3+3x^2-4? I know the answers (x1= -2 and x2= 1) but I need to show why these are the zeros.

Question

How can I calculate the zeros of x^3+3x^2-4?
I know the answers (x1= -2 and x2= 1) but I need to show why these are the zeros.

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Hưng Khoa 4 years 2021-09-03T08:12:26+00:00 1 Answers 2 views 0

Answers ( )

  1. thongdat2
    0
    2021-09-03T08:14:09+00:00
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    Answer:

    x = 2

    x = -1

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