(3a*2b+3a*ab+2b*ab)×2怎么算

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(3a*2b+3a*ab+2b*ab)×2怎么算(3a*2b+3a*ab+2b*ab)×2怎么算(3a*2b+3a*ab+2b*ab)×2怎么算(3a*2b+3a*ab+2b*ab)×2=a*(3*2

(3a*2b+3a*ab+2b*ab)×2怎么算
(3a*2b+3a*ab+2b*ab)×2怎么算

(3a*2b+3a*ab+2b*ab)×2怎么算
(3a*2b+3a*ab+2b*ab)×2
=a*(3*2b+3*b+2b*b)×2
=2a(6b+3b+2b²)
=2a*b(6+3+2b)
=2ab(9+2b)
=18ab+4ab²