题目内容
计算下列各题.
(1)(-
a2b)3-(-3ab3)4;
(2)(-x2y)-(-
xy2z);
(3)(-5x2)-
xy2z-(-5xz);
(4)(-3an+2b)3-(-4abn+3)2.
(1)(-
| 1 |
| 3 |
(2)(-x2y)-(-
| 2 |
| 3 |
(3)(-5x2)-
| 1 |
| 25 |
(4)(-3an+2b)3-(-4abn+3)2.
(1)(-
a2b)3•(-3ab3)4=-
a6b3•81a4b12=-3a10b15;
(2)(-x2y)•(-
xy2z)=
x3y3z;
(3)(-5x2)•
xy2z•(-5xz)=[-5×
×(-5)]•x4y2z2;
(4)(-3an+2b)3•(-4abn+3)2=(-27×16)•a3n+8b2n+9=-432a3n+8b2n+9.
| 1 |
| 3 |
| 1 |
| 27 |
(2)(-x2y)•(-
| 2 |
| 3 |
| 2 |
| 3 |
(3)(-5x2)•
| 1 |
| 25 |
| 1 |
| 25 |
(4)(-3an+2b)3•(-4abn+3)2=(-27×16)•a3n+8b2n+9=-432a3n+8b2n+9.
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