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-1)3; (3)2(2ab2c-3)2÷(ab)-2.

问题描述:

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

(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),
=8a4b6c-6
=
8a4b6
c6