You would have to put 21.3 on top and 1.9 under it. then you would have to borrow the number. the answer would be 19.4
(2 + 3i)^2 = 4 + 12i + 9(-1)
= 4 + 12i - 9
= -5 + 12i
(2 - 3i)^2 = 4 - 12i - 9(-1)
= 4 - 12i + 9
= 13 - 12i
REsult
= -5 + 12i + 13 - 12i
= 8 - 0i
Then
a = 8 and b = 0
Answer:
divided by 3 12/30 = 4/10 = 2/5
Step-by-step explanation:
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