题目内容
计算:
(1)0.3756×(-
)6;
(2)(-3)0+(-
)-2÷|-2|;
(3)(a-2b+1)(a+2b-1);
(4)(
x+y)(
x2+y2)(
x-y).
(1)0.3756×(-
| 4 |
| 3 |
(2)(-3)0+(-
| 1 |
| 2 |
(3)(a-2b+1)(a+2b-1);
(4)(
| 1 |
| 3 |
| 1 |
| 9 |
| 1 |
| 3 |
(1)原式=(
)6×(-
)6=
6=
;
(2)原式=1+4×
=3;
(3)原式=[a-(2b-1)]•[a+(2b-1)]=a2-4b2+4b-1;
(4)原式=(
x+y)(
x-y)(
x2+y2)=
故答案为
、3、a2-4b2+4b-1、
x4+y4.
| 3 |
| 8 |
| 4 |
| 3 |
| 1 |
| 2 |
| 1 |
| 64 |
(2)原式=1+4×
| 1 |
| 2 |
(3)原式=[a-(2b-1)]•[a+(2b-1)]=a2-4b2+4b-1;
(4)原式=(
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 9 |
| 1 |
| 81 |
故答案为
| 1 |
| 64 |
| 1 |
| 81 |
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