问题
解答题
-52÷(-3)2×(-5)3÷[-(-5)2]
答案
原式=-25÷9×(-125)÷(-25)
=-
×(-125)÷(-25)25 9
=
×(-25×125 9
)1 25
=-
.125 9
-52÷(-3)2×(-5)3÷[-(-5)2]
原式=-25÷9×(-125)÷(-25)
=-
×(-125)÷(-25)25 9
=
×(-25×125 9
)1 25
=-
.125 9