kerenc2005
kerenc2005
22-09-2021
Mathematics
contestada
simplify the expression show your work
Respuesta :
stacylopez05
stacylopez05
22-09-2021
Answer:
It looks like ur doing complex conjugates sooooo the answer is 21 - 12i
They way you show work is
(3-4i)(1+5i) - (2-i) <—— use foil method on first 2 parentheses
= 3 + 11i - 20i ^2 - 2 + i ( remember i^2 = -1)
= 3 + 11i + 20 -2 + i
= 21 + 12i
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