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

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

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

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

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

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

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) √30
B) 0
C) √ 5
D) 2√5

A) -π/6
B) 2π/3
C) 5π/3
D) π/3

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

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

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

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

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

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

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

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

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