一套结构如图的住房,房主打算出卧室外,其余地面都铺地砖。(1)

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  • (1)4b·2a+(4b-2b)·a+4a-2a-a)·b

    =4b·2a+2ab+ab

    =8ab+3ab

    =11ab

    (2)4×3×2×2+3×2×3

    =12×2×2+8

    =66