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lana [24]
3 years ago
7

Simplify the expression. Write your answer as a complex number.

Mathematics
1 answer:
prohojiy [21]3 years ago
4 0

Answer:

15-8i

Step-by-step explanation:

we know that

The algebraic expression is equal to

5\sqrt{9}-\sqrt{-64}}

Remember that

\sqrt{9}=3

and

i=\sqrt{-1}

so

\sqrt{-64}=i\sqrt{64}=8i

substitute

5\sqrt{9}-\sqrt{-64}}=5(3)-(8i)=15-8i

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