Answer:
The square of a monomial is [tex](9x^2)^2[/tex]
Step-by-step explanation:
Consider the provided monomial.
[tex]81x^4[/tex]
We need to Write the expression as a square of a monomial.
The above expression can be written as:
[tex]9\times 9\times x^2\times x^2[/tex]
[tex]9^2(x^2)^2[/tex]
[tex](9x^2)^2[/tex]
Hence, the square of a monomial is [tex](9x^2)^2[/tex]