Express ( 3 + 4i)² in the form ( a + ib ).
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10
We have :
( 3 + 4i )²
=> 3² + (4i )² + 2 × 3 × 4i
=> ( 9 + 16i² + 24i )
=> ( 9 - 16 + 24i )
=> ( -7 + 24i ).
( 3 + 4i )²
=> 3² + (4i )² + 2 × 3 × 4i
=> ( 9 + 16i² + 24i )
=> ( 9 - 16 + 24i )
=> ( -7 + 24i ).
Answered by
0
-7+24i is ans........
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