化簡：3x2－5x一6－7x2－6x＋15
來源：國語幫 2.63W
問題詳情：
化簡：3x2－5x一6－7x2－6x＋15
【回答】
3x2－5x–6－7x2－6x +15
=（3－7）x2+（－5－6）x +（－6+15）·············································· 1分
= －4x2－11 x +9················································································· 2分
知識點：整式的加減
題型：計算題
![化簡求值：[(2x－y)(2x＋y)＋y(y－6x)＋x(6y－2)]÷2x，其中x＝1009.](https://i2.guoyubang.com/e7bce0eae93a33/a2e7a0/e7bdf7ffe4/a2e7a0bab86e7b-s.jpg "化簡求值：[(2x－y)(2x＋y)＋y(y－6x)＋x(6y－2)]÷2x，其中x＝1009."){kind=small}