0220
0220
02-11-2016
Mathematics
contestada
simplify 5i × i × -2i = ??
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shannonmarie16
shannonmarie16
02-11-2016
5 i x i x - 2 i = 10 i
Answer Link
AL2006
AL2006
02-11-2016
i = √-1
i² = -1
i³ = -√-1 = -i
(5i) · (i) · (-2i)
= (5 · 1 · -2) i³
= -10 i³ =
10 i
Answer Link
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