Which of the following is a complex number?O27282 + √2- V15O-O–4 + V731/3 - 7

A complex number can be said to be a number that is expressed in the form:
a + bi
where i = √-1
From the options given the complex number will be:
[tex]\frac{2}{3}+\sqrt{-\frac{27}{28}}[/tex]Let's simplify the