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09.03.2020 •
Mathematics
(3-4i)(1+5i)-(2-1)
Please give me the correct answer
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Ответ:
2-9i
Step-by-step explanation:
(3-4i)(1+5i)-(2-1)
Expand the algebra expression, and we have
3(1+5i)-4i(1+5i)-(1)
3+15i-4i-20i-1
Collect like terms
3-1+15i-4i-20i
2+11i-20i
2-9i
Please note that algebra expressions does not have the sign of equality.
Ответ:
b
Step-by-step explanation: