变式训练的化简求值
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变式训练的化简求值变式训练的化简求值 变式训练的化简求值6a^2b-(-3a^2b+5ab^2)-2(5a^2b-3ab^2)=6a^2b+3a^2b-5ab^2-10a^2b+6ab^2=
变式训练的化简求值
变式训练的化简求值
变式训练的化简求值
6a^2b-(-3a^2b+5ab^2)-2(5a^2b-3ab^2)
=6a^2b+3a^2b-5ab^2-10a^2b+6ab^2
=-a^2b+ab^2
=-(-2)^2x1/2-2x(1/2)^2
=-2-1/2
=-5/2