若a满足a²-2a=3.求3a²-6a-8
问题描述:
若a满足a²-2a=3.求3a²-6a-8
答
1
答
3a²-6a-8 = 3(a²-2a) - 8 =3x3-8=1
若a满足a²-2a=3.求3a²-6a-8
1
3a²-6a-8 = 3(a²-2a) - 8 =3x3-8=1