a. The expression is given
[tex]\frac{-4}{\sqrt[]{9}}[/tex]
The expression is in the rational form that is the p/q form.
Hence the given expression is a rational number.
b. The expression is given
[tex]\frac{\sqrt[]{-4}}{9}[/tex]
Since the expression is in the rational form that is the p/q form.
And also one number is the imaginary number.
[tex]\sqrt[]{-4}=\sqrt[]{4}i[/tex]
Hence the expression is a rational number and imagnary number.
c. The expression is given
[tex]9-\sqrt[]{-4}[/tex]
The expression is written as
[tex]9-\sqrt[]{4}i[/tex]
Hence the expression is the complex number and there is also imaginary number
[tex]\sqrt[]{4}i[/tex]
d. The expression is given
[tex]-4-\sqrt[]{9}[/tex]
Simplify the expression
[tex]-4-3=-7[/tex]
This is the integer.
