Mathematics
Senior High
この4つの式の解き方教えてください。。。
練習 次の式を因数分解せよ。
27 (1) x?+2.xy+y°-5x-5y+6
(2) x-3xy+2y°+x+y-6
(3) 3x°+4xy+y°+7x+y-6
(4) 2.x°+5xy+2y°ーx+y-1
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