问题 解答题
9
7
8
×8+ 8
6
7
×7+7
5
6
×6+6
4
5
×5
答案

9

7
8
×8+ 8
6
7
×7+7
5
6
×6+6
4
5
×5

=(9+

7
8
)×8+(8+
6
7
)×7+(7+
5
6
)×6+(6+
4
5
)×5

=72+7+56+6+42+5+30+4

=222.

不定项选择题
填空题