(1-3a)²+3(3a-1)因式分解
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(1-3a)²+3(3a-1)因式分解(1-3a)²+3(3a-1)因式分解(1-3a)²+3(3a-1)因式分解(1-3a)²+3(3a-1)=(1-3a)(
(1-3a)²+3(3a-1)因式分解
(1-3a)²+3(3a-1)因式分解
(1-3a)²+3(3a-1)因式分解
(1-3a)²+3(3a-1)
=(1-3a)(1-3a)-3(1-3a)
=-(2+3a)(1-3a)
=(3a+2)(3a-1)
(1-3a)²+3(3a-1)
=(3a-1)(3a-1+3)
=(3a-1)(3a+2)