9*（-64）=3+(-4)=-1
4*8=2+2=4
4*(-1)=2+(-1)=1
分步做比较好
设a.b都是有理数,规定a*b=根号a加b的立方根,则（4*8）*（9*（-64）=
设a.b都是有理数,规定a*b=根号a加b的立方根,则（4*8）*（9*（-64）=
数学人气：580 ℃时间：2020-04-09 11:01:57
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