(–3i) (4i)(–5i) a 60i3 b 60i c 60 d −60i

Question

(–3i) (4i)(–5i)
a
60i3
b
60i
c
60
d
−60i

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Hồng Cúc 6 months 2021-08-30T07:14:53+00:00 1 Answers 2 views 0

Answers ( )

    0
    2021-08-30T07:16:50+00:00

    Answer: -60i

    Step-by-step explanation:

    (-3i) (4i) = -12i^2 = 12 because i^2 = -1

    then lastly

    12 (-5i) = -60i

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