ashleyrosengren ashleyrosengren
  • 20-10-2017
  • Mathematics
contestada

Write the product in standard form. ( 4 + 7i)( 7 + 7i)
a) -21 - 77i
b)49i2 + 77i + 28
c)-21 + 77i
d)77 + 21i

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ᴄʜɪʟᴅ
ᴄʜɪʟᴅ ᴄʜɪʟᴅ
  • 20-10-2017
the answer is a) -21 - 77i
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