Expression 2: "X" equals StartRoot, left parenthesis, 21 plus 7 , right parenthesis squared minus left parenthesis, 21 minus 7 , right parenthesis squared , EndRootX=21+72−21−72
equals=
24.2 4 8 7 1 1 3 0 624.248711306
2
Expression 3:
3
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Center:
center: left parenthesis, 0 , 0 , right parenthesis0,0