问题
解答题
计算: (1)(ab2)2-a2b4. (2)[-a2•(-a4b3)3]3. (3)x2x3x4+(x6)4+(-2x12)2. (4)(
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答案
(1)原式=a2b4-a2b4
=0.
(2)原式=[-a2•(-a12b9)]3
=[a14b9]3
=a42b27.
(3)原式=x9+x24+4x24
=x9+5x24.
(4)原式=(
)2013×32013×3,1 3
=(
×3)2013×3,1 3
=12013×3
=1×3
=3.