Jawabanmu

2014-08-24T14:05:13+07:00
(7-8) x kuadrat -5+5 x +6-6
=x kuadrt
2014-08-24T14:09:20+07:00
7xkuadrat - 5x + 6 = 8xkuadrat - 5x + 6
-5x - 5x = 8xkuadrat - 7xkuadrat - 6 + 6
-10x = xkuadrat
atau 
xkuadrat = -10x

(maaf kalau salah)