Jawapan

2015-04-15T12:13:25+08:00
(3x - y)² : (xy - 2) - 1 = (3x² - 6xy + y²) : xy - 3
2015-04-15T17:47:01+08:00
 (3x-1y)2 ÷(xy)-1
=6x-2y÷ -1xy
=