题目内容
算一算:
(1)3m2•m8-(m2)2•(m3)2;
(2)(-2a2b3)4+a8•(-2b4)3
(3)计算:-2100×0.05100×(-1)999.
(1)3m2•m8-(m2)2•(m3)2;
(2)(-2a2b3)4+a8•(-2b4)3
(3)计算:-2100×0.05100×(-1)999.
(1)原式=3m10-m4•m6
=3m10-m10
=2m10;
(2)原式=16a8b12-8a8b12
=8a8b12;
(3)原式=-(2×0.05)100×(-1)
=0.1100.
=3m10-m10
=2m10;
(2)原式=16a8b12-8a8b12
=8a8b12;
(3)原式=-(2×0.05)100×(-1)
=0.1100.
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