题目内容
-52×
+25×
-25×
.
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分析:先算乘方,再提取公因式25,然后进行相乘即可求出答案.
解答:解:-52×
+25×
-25×
=-25×
+25×
-25×
=(-
+
-
)×25=-12
.
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点评:此题考查了因式分解的应用;解题的关键是先提取公因式,再进行计算比较简便.
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