Expression 2: "z" equals left parenthesis, "x" plus 3 , right parenthesis left parenthesis, "y" minus 2 , right parenthesis left brace, left parenthesis, "x" plus 3 , right parenthesis left parenthesis, "y" minus 2 , right parenthesis equals left bracket, 8...1 1 , right bracket , right bracez=x+3y−2x+3y−2=8...11
2
Expression 3: "z" equals left parenthesis, "x" plus 3 , right parenthesis left parenthesis, "y" minus 2 , right parenthesis left brace, 8 "y" equals "x" cubed minus 3 "x" squared minus 9 "x" plus 43 , right bracez=x+3y−28y=x3−3x2−9x+43
3
Expression 4: left parenthesis, 0 , 43 eighths , 3 left parenthesis, 43 eighths minus 2 , right parenthesis , right parenthesis0,438,3438−2
