问题 解答题

计算下列各式,并把结果化为正整数指数幂的形式.

(1)a2b3(2a-1b3);

(2)(a-2-3(bc-13

(3)2(2ab2c-32÷(ab)-2

答案

(1)a2b3(2a-1b3)=2a2-1b3+3=2ab6

(2)(a-2-3(bc-13

=a6b3c-3

=

a6b3
c3

(3)2(2ab2c-32÷(ab)-2

=2(4a2b4c-6)÷(a-2b-2),

=8a4b4c-4

=

8a4b4
c4

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