Expression 3: "S" StartRoot, 2 , EndRoot equals StartRoot, left parenthesis, 5 plus 7 , right parenthesis squared plus left parenthesis, 7 minus 5 , right parenthesis squared , EndRootS2=5+72+7−52
3
Expression 4:
4
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Center:
center: left parenthesis, negative 1 , 0 , right parenthesis−1,0