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18-04-2020
Mathematics

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3[tex]\sqrt{16}[/tex] + [tex]\sqrt{-9}[/tex]
Simplify the expression. Write your answer as a complex number.

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ghanami ghanami

18-04-2020

Answer:

Step-by-step explanation:

hello :

let: A = 3√16+√-9

16=4² and -9 = 9i² =(3i)² .... ( i² = -1)

√16 =√4² = 4 and √-9 = √9i²= √(3i)² ± 3i

A= 12 ± 3i

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