Identify the number as real, complex, pure imaginary, or nonreal complex. (more than one of these descriptions may apply.) negative 1 a)non real complex b)real c) pure imaginary d)complex

Since the number sets follow this pattern of inclusions:

and , we can deduce that -1 is also a real number and a complex number (since if an element belongs to a set, it also belongs to all the supersets of its set).

So, the correct options are B and D.

b

step-by-step explanation:

the word superfluous means unnecessary