product of 2 numbers a and b represented as sum of four squares i , j , k , l
document . write ( " " + i + " " ) ; document . write ( " " + j + " " ) ; document . write ( " " + k + " " ) ; document . write ( " " + l + " " ) ; document . write ( " " + a + " " + b ) ; document . write ( " " + " " + " " + " " ) ; document . write ( ab + " " ) ; document . write ( i + " " + i + " " ) ; document . write ( j + " " + j + " " ) ; document . write ( k + " " + k + " " ) ; document . write ( l + " " + l + " " ) ; document . write ( " " ) ; } } } } } }