Mathematics
Junior High

一番上式のくくる過程までは分かります。
2つ目の式から分かりません
何故-でくくるんですか?

(6) 8a 262-8a3b-2ab3 = 2ah (4ah-4a²-l²) =2ah₤= (4a²-4ah+h³)} -IX -2ah (4a-4ahth) = -1) 3)-7x+7 -zah (2a-l) =-20
因数分解

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