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5 votes
Evaluate the expression





49

and write the result in the form

a

+

b

i

.

1 Answer

7 votes

Answer:

0+7i

Explanation:


√(-49)=√(49)√(-1)=7i=\boxed{0+7i}

The real part of the expression ('a') is zero. We have shown that, so it will be in the required form. Ordinarily, 0 would not be shown when writing this number.

__

We have taken the question to mean the principal square root. -7i is also a root of -49.

User Daniel Lord
by
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