题目内容
若A=4x2-4,B=2x+3,则
+B=
| A | 2 |
2x2+2x+1
2x2+2x+1
.分析:根据题意可得
+B=
+(2x+3),去括号后合并同类项即可.
| A |
| 2 |
| 4x2-4 |
| 2 |
解答:解:由题意得:
+B
=
+(2x+3)
=2x2-2+2x+3
=2x2+2x+1.
故答案为:2x2+2x+1.
| A |
| 2 |
=
| 4x2-4 |
| 2 |
=2x2-2+2x+3
=2x2+2x+1.
故答案为:2x2+2x+1.
点评:本题考查整式的加减,难度不大,解决此类题目的关键是熟记去括号法则,熟练运用合并同类项的法则.
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