Question

Which of the following is a complex number? (Look at picture)

3
- V151 - VIE
o **V7-4*?
-4
3 + - 7 + 7
+
- 7/ - 70 V
o
27 2
28
27
28
V3

Answer 1

B.

Explanation:

In mathematics, a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a symbol, called the imaginary unit, that satisfies the equation i² = −1. Because no real number satisfies this equation, i was called an imaginary number by René Descartes.