问题
解答题
计算:(
|
答案
原式=-
×(-9 10
)×(-8 9
)×…×(-7 8
)×(-2 3
)=-(1 2
×9 10
×8 9
×…×7 8
×2 3
)=-1 2
.1 10
计算:(
|
原式=-
×(-9 10
)×(-8 9
)×…×(-7 8
)×(-2 3
)=-(1 2
×9 10
×8 9
×…×7 8
×2 3
)=-1 2
.1 10