
计算:(1)(-12a2b2c)?(-14abc2)2=-34a4b4c5-34a4b4c5;(2)(3a2b-4ab2-5ab-1)?(-2ab2)=______
计算:(1)(-12a2b2c)?(-14abc2)2=-34a4b4c5-34a4b4c5;(2)(3a2b-4ab2-5ab-1)?(-2ab2)=______....
计算:(1)(-12a2b2c)?(-14abc2)2=-34a4b4c5-34a4b4c5;(2)(3a2b-4ab2-5ab-1)?(-2ab2)=______.
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(1)(-12a2b2c)?(-
abc2)2,
=(-12a2b2c)?
a2b2c4,
=-
a4b4c5;
故答案为:-
a4b4c5;
(2)(3a2b-4ab2-5ab-1)?(-2ab2),
=3a2b?(-2ab2)-4ab2?(-2ab2)-5ab?(-2ab2)-1?(-2ab2),
=-6a3b3+8a2b4+10a2b3+2ab2.
故答案为:-6a3b3+8a2b4+10a2b3+2ab2.
1 |
4 |
=(-12a2b2c)?
1 |
16 |
=-
3 |
4 |
故答案为:-
3 |
4 |
(2)(3a2b-4ab2-5ab-1)?(-2ab2),
=3a2b?(-2ab2)-4ab2?(-2ab2)-5ab?(-2ab2)-1?(-2ab2),
=-6a3b3+8a2b4+10a2b3+2ab2.
故答案为:-6a3b3+8a2b4+10a2b3+2ab2.
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