Expression 2: "f" Subscript, "z" "e" "r" , Baseline left parenthesis, "b" , right parenthesis equals 8 minus left parenthesis, "f" Subscript, "q" "b" "r" "t" , Baseline left parenthesis, "b" plus StartRoot, "b" squared plus 8 , EndRoot , right parenthesis plus "f" Subscript, "q" "b" "r" "t" , Baseline left parenthesis, "b" minus StartRoot, "b" squared plus 8 , EndRoot , right parenthesis , right parenthesisfzerb=8−fqbrtb+b2+8+fqbrtb−b2+8
2
Expression 3: "y" equals "f" Subscript, "q" "b" "r" "t" , Baseline left parenthesis, "f" Subscript, "z" "e" "r" , Baseline left parenthesis, "x" plus 280 , right parenthesis , right parenthesis exponent left parenthesis, 3 , right parenthesis Has graph. To audio trace, press ALT+T.y=fqbrtfzerx+280exp3