SOLUTION:
Step 1:
In this question, we are given the following:
[tex](\text{ 3x+ 5\rparen\lparen3x-5\rparen}[/tex]Step 2:
The details of the solution are as follows:
[tex]\begin{gathered} Multiplying\text{ this, we have that:} \\ (\text{ 3x+ 5\rparen\lparen3x-5\rparen= 9x}^2-15x+15x-25\text{ = 9x}^2\text{ - 25} \end{gathered}[/tex]CONCLUSION:
The final answer is:
[tex]9x^2\text{ - 25}[/tex]