Answer:
Hi. The subexpression is:
1/[tex]x^{5}+x^{6}+x^{3}[/tex]
Step-by-step explanation: Adding the exponents of x the equation is as follows :
[tex]x^{5}+x^{6}+x^{3}[/tex]
if you multiply by the subexpression 1/[tex]x^{5}+x^{6}+x^{3}[/tex], the equation would be simplified, as follow:
([tex]x^{5}+x^{6}+x^{3}[/tex])*(1/[tex]x^{5}+x^{6}+x^{3}[/tex]) = 1
