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Mathematics
Junior High
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アイスケーキ
アイスケーキ

解説付きで教えてください🙏

10.53²-47² (50 + 3) ²= (50-3)*

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✨ Best Answer ✨

user
user

a²-b²=(a+b)(a-b)より
(53+47)×(53-47)=100×6=600

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