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- ?
How do you solve -LSB- math -RSB- x ^ 2 = 2 ^ x -LSB- / math -RSB- analytically ?