Expression 7: "z" squared equals "x" to the 20th power plus "y" to the 20th powerz2=x20+y20
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Expression 8: left parenthesis, "R" Subscript, "z" , Baseline left parenthesis, "x" , "y" , "z" , "p" , "q" , "s" , right parenthesis , right parenthesis squared equals left parenthesis, "R" Subscript, "x" , Baseline left parenthesis, "x" , "y" , "z" , "p" , "q" , "s" , right parenthesis , right parenthesis to the 20th power plus left parenthesis, "R" Subscript, "y" , Baseline left parenthesis, "x" , "y" , "z" , "p" , "q" , "s" , right parenthesis , right parenthesis to the 20th powerRzx,y,z,p,q,s2=Rxx,y,z,p,q,s20+Ryx,y,z,p,q,s20
8
I used p, q, s as rotation variables. you can use other variables as well.