问题
解答题
计算:
-5
|
答案
×18
=33
×2
=33
,6
×18
=350
×52
=30,2
-5
• 8 27
• 31 1 4
=-5×54
×2 9
×6
×3×35 2
=-306
,5
2 3
• (-ab3 3 4
)=ab 2b 3
×(-ab 3 4
)=-ab
.ab2 2
计算:
-5
|
×18
=33
×2
=33
,6
×18
=350
×52
=30,2
-5
• 8 27
• 31 1 4
=-5×54
×2 9
×6
×3×35 2
=-306
,5
2 3
• (-ab3 3 4
)=ab 2b 3
×(-ab 3 4
)=-ab
.ab2 2