(ab+2ab^2-3a^2b)/(ab)七下 谢谢

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(ab+2ab^2-3a^2b)/(ab)七下谢谢(ab+2ab^2-3a^2b)/(ab)七下谢谢(ab+2ab^2-3a^2b)/(ab)七下谢谢(ab+2ab^2-3a^2b)/(ab)=ab(

(ab+2ab^2-3a^2b)/(ab)七下 谢谢
(ab+2ab^2-3a^2b)/(ab)
七下 谢谢

(ab+2ab^2-3a^2b)/(ab)七下 谢谢
(ab+2ab^2-3a^2b)/(ab)
=ab(1+2b-3a)/(ab)
=1+2b-3a

=ab(1+2b-3a)/(ab)
=1+2b-3a

1+2b-3a