Answer:
[tex]x^{2}y-z^{2}[/tex]
Step-by-step explanation:
Apply [tex](a+b)(a-b) = a^{2} -b^{2}[/tex] where [tex]x\sqrt{y}[/tex] is [tex]a[/tex] and [tex]z[/tex] is [tex]b[/tex].
[tex](x\sqrt{y} )^{2}-z^{2}[/tex]
[tex](x\sqrt{y} )^{2}=x^{2}y[/tex]
[tex]x^{2}y-z^{2}[/tex]
Hope this helps! :]
