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telo118 [61]
3 years ago
5

Write as a complex number in the form of a + bi.

Mathematics
2 answers:
Romashka [77]3 years ago
7 0

Answer: c. 7 + 4i

Step-by-step explanation:

√-16 + √49

√49 = 7

√-16 = √16 × -1 = √16 × √-1

note:√-1 = i

√16= 4

Therefore

√- 16 + √49 = 4i + 7

=7+4i

denpristay [2]3 years ago
5 0

Answer:

C. 7 + 4i

Step-by-step explanation:

√-16 can't come out positive because of - so it's like this √16 × √-1

√16 is 4 and √is = i

√49 will come out as 7

so the answer is 7 + 4i

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