Hello!
The answer is:
B. [tex]9x^{2}-16y^{2}[/tex]
Why?
To find the equivalent expression we need to apply the distributive property, so:
[tex](3x-4y)(3x+4y)=9x^{2}+12xy-12yx-16y^{2}\\\\9x^{2}+12xy-12yx-16y^{2}=9x^{2}+12xy-12xy-16y^{2}=9x^{2}-16y^{2}[/tex]
So, the correct option will be B. [tex]9x^{2}-16y^{2}[/tex]
Have a nice day!
