Expression 2: left parenthesis, StartFraction, left parenthesis, "x" minus "a" , right parenthesis Over "a" , EndFraction , right parenthesis squared plus left parenthesis, StartFraction, StartNestedFraction, 410 NestedOver 320 , EndNestedFraction "y" Over "a" , EndFraction , right parenthesis squared equals 1x−aa2+410320ya2=1
2
Expression 3: left parenthesis, StartFraction, left parenthesis, "x" plus "a" , right parenthesis Over "a" , EndFraction , right parenthesis squared plus left parenthesis, StartFraction, StartNestedFraction, 410 NestedOver 320 , EndNestedFraction "y" Over "a" , EndFraction , right parenthesis squared equals 1x+aa2+410320ya2=1