1樓：鄒遊遊
c=2a的平方-3b的平方-4c的平方
8（x的平方-x-1）
moved moving
pleased
worse
polluting
2樓：匿名使用者
^數學已知a=a^2+b^2-c^2,b=-3a^2+2b^2+5c^2,
a+b=-2a^2+3b^2+4c^2
並且a+b+c=0，
c=2a^2-3b^2-4c^2
英語he's moved (move) by her.her story is so moving (move).
the teacher was pleased with what the students said.(please).
his hand writing is worse than yours.(bad).
改錯we must stop polluting the earth.
3樓：匿名使用者
his hand writing is (worse) than yours.
he's (moved) by her.her story is so (moving).
the teacher was (pleased) with what the students said.
we must stop (polluting) the earth.
4樓：匿名使用者
英語：he's moved (move) by her.her story is so moving (move).
the teacher was pleased with what the students said.(please).
his hand writing is worse than yours.(bad).
改錯we must stop polluting the earth.
5樓：匿名使用者
moved ，moving ，pleased ，worse！ 把pollute 改為polluting
初一數學題（急急急），急急急初中數學題！！！
19cdd a 10 8 2 a b 0 a b 0 原式 2 3 2 m n 3 4 3 m n 4 3 m n 13 3 m n 原式 m 2 x 3n 1 xy y 多項式不含三次項 m 2 0且3n 1 0 解得 m 2 n 1 3 m 3n 2 3 1 3 1 3x 2n 1 y 5 5 ...
初一數學題急急急急急急急急初中數學題！！！
1 由上面的得分和扣分情況可以看出答對一題得10分，答錯或者不答扣5分 所以得分的式子為 得分 10n 5 10 n 2 得零分的情況 不可能，設得分為0 則 10n 5 10 n 0解得 15n 50，n 10 3，不是整數，不成立，所以得分不可能為0 得分為負分的情況 設 10n 5 10 n ...
初一數學題，急急急急急
1 設x為原價，原價2.5倍為2.5x 虧本價 2.5x 2.5x 0.2 2x 破產價 2x 2x 0.3 1.4x 跳樓價 1.4x 1.4x 0.4 0.84x0.84x x 84 答 百分比為84 2原價 得到100x 方案 20 2x 40 1.4x 40 0.84x 129.6x所以方案...