Jawabanmu

2014-06-08T00:01:36+07:00
123a + 321b = 666
123b + 321a = 222
jumlahkan
444a + 444b = 888
a + b = 2 diperoleh
123a + 321b = 666
123(2 - b) + 321b = 666
246 + 198b = 666
198b = 420
b = 70/33
Nilai ab + b² = (a + b)b = 2(70/33) = 140/33 = 4 8/33
jawaban: D