The equivalent expression of [tex](mn)^3[/tex] will be [tex]m^3n^3[/tex].
Given expression,
[tex](mn)^3[/tex]
An exponent indicates how many times the number must be multiplied by itself. Exponents are also referred to as powers or indices.
Since in [tex](mn)^3\\[/tex], the base is [tex]mn[/tex] and the exponent is 3.
On Applying the law of exponent
[tex](ab)^m=a^mb^m[/tex], we get
[tex](mn)^3=m^3n^3[/tex]
Hence the correct option is (D) [tex]m^3n^3[/tex].
For more details on Exponents follow the link:
https://brainly.com/question/15993626
