题目
题型:不详难度:来源:
. |
x |
答案
1 |
10 |
. |
x |
. |
x |
. |
x |
所以(
x | 21 |
x | 22 |
x | 210 |
. |
x |
. |
x |
即(
x | 21 |
x | 22 |
x | 210 |
. |
x |
. |
x |
. |
x |
所以(
x | 21 |
x | 210 |
. |
x |
又(x12+x22+…+x102)-6(x1+x2+…+x10)+10×32=120,
即
. |
x |
. |
x |
所以
. |
x |
10 |
核心考点
举一反三
. |
x |
1 |
10 |
. |
x |
. |
x |
. |
x |
x | 21 |
x | 22 |
x | 210 |
. |
x |
. |
x |
x | 21 |
x | 22 |
x | 210 |
. |
x |
. |
x |
. |
x |
x | 21 |
x | 210 |
. |
x |
. |
x |
. |
x |
. |
x |
10 |