问题
解答题
计算:
(1)am-1÷am-2;
(2)8a6b5÷(-2ab)3;
(3)(6x3y2-7x4y)÷xy.
答案
(1)am-1÷am-2=a;
(2)8a6b5÷(-2ab)3
=8a6b5÷(-8a3b3)
=-a3b2;
(3)(6x3y2-7x4y)÷xy
=6x2y-7x3.
计算:
(1)am-1÷am-2;
(2)8a6b5÷(-2ab)3;
(3)(6x3y2-7x4y)÷xy.
(1)am-1÷am-2=a;
(2)8a6b5÷(-2ab)3
=8a6b5÷(-8a3b3)
=-a3b2;
(3)(6x3y2-7x4y)÷xy
=6x2y-7x3.