题目内容
(体验过程题)计算:(-5
)2×2
×2
原式=(-5
)2×(2
)2①
=(-5)2×(
)2×______×______②
=25×______×4×______③
=______.
(1)请将上述过程补充完整.
(2)上述解答过程第①步运用了公式______,第②步运用了公式______,第③步运用了公式______.
(3)体验上述过程,请完成计算:
(-5
)2×2
×(-2
)÷(-2
)2
|
| 5 |
| 5 |
原式=(-5
|
| 5 |
=(-5)2×(
|
=25×______×4×______③
=______.
(1)请将上述过程补充完整.
(2)上述解答过程第①步运用了公式______,第②步运用了公式______,第③步运用了公式______.
(3)体验上述过程,请完成计算:
(-5
|
| 0.3 |
|
|
(1)22,(
)2②;
,5 ③;
50;
(2)a•a=a2,(ab)2=a2b2,(
)2=a;
(3)(-5
)2×2
×(-2
)÷(-2
)2=(-5)2×(
)2×2×
×(-2)×
÷
=25×
×2×
×(-2)×
×
=-25×
×4×
×
=-9.
| 5 |
| 1 |
| 10 |
50;
(2)a•a=a2,(ab)2=a2b2,(
| a |
(3)(-5
|
| 0.3 |
|
|
|
|
|
| 4 |
| 3 |
=25×
| 2 |
| 5 |
|
|
| 3 |
| 4 |
=-25×
| 2 |
| 5 |
| 3 |
| 4 |
| 3 |
| 10 |
=-9.
练习册系列答案
相关题目