運算式 5: "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis plus "g" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesisf2x+g2x
5
運算式 6: "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis minus "g" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesisf2x−g2x
6
運算式 7: "g" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis minus "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesisg2x−f2x
7
運算式 8: "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis times "g" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesisf2x·g2x
8
運算式 9: StartFraction, "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis Over "g" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis , EndFractionf2xg2x
9
運算式 10: StartFraction, "g" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis Over "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis , EndFractiong2xf2x
