MasterKen99 MasterKen99

28-02-2017
Mathematics

Answered

Multiply (2 − 7i)(9 + 5i).

A53-53i
B-17-53i
C18-35i^2
D18-53i-36i^2

Verified Answer :

smorin52 smorin52

28-02-2017

(2-7i) (9+5i)

18+10i-63i-35i^2

i^2= -1 so -35*-1= 35

35+18= 53

-63i+10i= -53I

answer is 53-53i

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