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Which of the following is a complex number? A. -7 B. 2+ square root of 3 C. 4+9i D. pi
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4 votes
Which of the following is a complex number?

A. -7
B. 2+ square root of 3
C. 4+9i
D. pi

User Steve Chaloner
by
8.1k points

2 Answers

2 votes
A complex number has a real part and an imaginary part. The standard form is a + bi, where a is the real part and bi is the imaginary part.
The only choice here that fits that criteria is letter C.
User Dogiordano
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7.3k points
5 votes
The answer is: C, 4+9i
User Asgu
by
8.8k points
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