Math, asked by abrahamtreesa457, 3 months ago

express in the form a+ib (2+i)²​

Answers

Answered by jagarnathpandit6371
0

(1-2i)=1²+(2i)²-2.1(2i)

=1+4i²-4i

(i²=-1)=1-4-4i

=-3-4ia=-3,b=-4

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