题目内容
计算题:
(1)(-2xy2)3
(2)(-2x)-(3x2y)
(3)-(x2)3-x4-x2
(4)(-3)0+(-
)-2÷|-2|
(5)(3x2y-2x+1)(-2xy)
(6)(x-3y)(x-
y).
(1)(-2xy2)3
(2)(-2x)-(3x2y)
(3)-(x2)3-x4-x2
(4)(-3)0+(-
| 1 |
| 2 |
(5)(3x2y-2x+1)(-2xy)
(6)(x-3y)(x-
| 1 |
| 2 |
(1)原式=-8x3y6;
(2)原式=-6x3y;
(3)原式=-x6-x6
=-2x6;
(4)原式=1+4÷2
=3;
(5)原式=-6x3y2+4x2y-2xy;
(6)原式=x2-
xy-3xy+
y2
=x2-
xy+
y2.
(2)原式=-6x3y;
(3)原式=-x6-x6
=-2x6;
(4)原式=1+4÷2
=3;
(5)原式=-6x3y2+4x2y-2xy;
(6)原式=x2-
| 1 |
| 2 |
| 3 |
| 2 |
=x2-
| 3 |
| 2 |
| 3 |
| 2 |
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