Jawabanmu

2014-09-07T16:19:05+07:00
2014-09-07T16:22:05+07:00
3x + 5y² - 4x + (-2y²)-7 =
3x - 4x + 5y2 - 2y2 - 7
-x + 3y2 - 7
1 5 1