If -LSB- math -RSB- x + y = 2 -LSB- / math -RSB- and -LSB- math -RSB- x ^ 2 + y ^ 2 = 2 -LSB- / math -RSB- , what is the value of -LSB- math -RSB- xy -LSB- / math -RSB- ?
Is there any math software that can convert math expressions as we find in text books into simple text form like -LRB- x ^ 2 + y ^ 2 -RRB- / 2 * x. ?