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olganol [36]
3 years ago
11

What's (9+9i)(-1-5i) using foil method

Mathematics
1 answer:
hammer [34]3 years ago
5 0

Answer:

36-54i

Step-by-step explanation:

(9+9i)(-1-5i)

v

-9-9×5i-9i-9i×5i

v

-9-45i-9i-45i^2

v

-9-45i-9i-45×(-1)

v

(-9)-45i-9i+(45)

v

36(-45i)(-9i)

v

36-54i

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