Question

Which of the following is a complex number?

Answer 1

Answer:

$B)~ 3\sqrt{\dfrac 75} + \sqrt{- \dfrac 95 }$

Step-by-step explanation:

$3\sqrt{\dfrac 75} + \sqrt{- \dfrac 95 }\\\\\\= 3\sqrt{\dfrac 75} + i\sqrt{\dfrac 95 }\\\\\text{It is now in the standard form of a complex number (a+bi).}$