因式分解:(1) 3a(b-2)+2a(2-b) (2) 1-49a的2次幂b的2次幂

问题描述:

因式分解:(1) 3a(b-2)+2a(2-b) (2) 1-49a的2次幂b的2次幂

:(1) 3a(b-2)+2a(2-b)
=3a(b-2)-2a(b-2)
=a(b-2)
(2) 1-49a的2次幂b的2次幂
=(1+7ab)(1-7ab)