Jawabanmu

2014-04-04T15:34:46+07:00
Nilai x = 3
-x2 + x - 12 = 0
3.3 + 3 - 12 = 0
9 + 3 -12 = 0
12 - 12 = 0
-x2 + 2x < 10
3.3 + 2.3 < 10
9 + 6 < 10
15 < 10
1 5 1