A) It contains both real and imaginary number.
B) All of the choices
C) the symbol j and i denotes same value
D) The imaginary number part of it is the square root of the negative number.

A) 2+3i
B) All of the choices are considered
C) 15
D) rcis30

A) 1 + 2i
B) -1 +2i
C) 7 +12i
D) 7 - 12i

A) exponential form
B) trigonometric form
C) rectangular form
D) polar form

A) all of the choices
B) e^0.54i
C) 5.83cis0.54 rad
D) 5.83∠30.96°

A) -i
B) i
C) 1
D) -1

A) 1 + 2i
B) 7 +12i
C) -1 +2i
D) 7 - 12i

A) 0.4 - 1.8i
B) 37-3i
C) 37 +3i
D) -0.4 + 1.8i

A) 0
B) √30
C) 2√5
D) √ 5

A) -π/6
B) 2π/3
C) π/3
D) 5π/3

A) 0.93
B) 2.22
C) 5.35
D) 0.93

A) 3e^-1.571i
B) -3i
C) all of the choices are considered
D) 3∠90

A) 16.58∠43.60°
B) 12.01+11.43i
C) all of the choices are considered
D) 16.58e^0.761i

A) -5.12+19.12i
B) 14√2 ∠75°
C) 14√2 ∠-75°
D) 5.12-19.12i

A) None of the choices are correc
B) 1-2i
C) 2.236 ∠-63.43°
D) 2.24e^-5.176i

A) (2-2√3)+(-2-2√3 i)
B) -5.47 +1.47i
C) (-2-2√3)+(-2-2√3 i)
D) +5.47 -1.47i

A) -8+4i
B) 12-3i
C) none of the choices
D) 4+8i

A) 20.30∠166.67
B) 20.30 e^-1.34i
C) 20.30∠-76.67
D) 4.68+19.75i

A) -4.25 + 1.67i
B) 4.6 ∠-338.55°
C) none of the choices
D) 4.6 e^0.374i

A) 2∠240°
B) 2∠0
C) all of the choices are correct
D) 2∠120°