Mathematics
Junior High

中学3年の平方根と因数分解です
3番と6番のと解説をお願いしたいです!

[1 (3) 2498×2497-5002×2496+2502×2493 浜 (4) 3-(3°+3°)+2氷録画O議円nる( (5) 7.65°-2.35° BCの交 さ来 い指円O 15 17

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