Mathematics
Senior High
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練習
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次の式を因数分解せよ。
(1)(x-y)2-5(x-y)+6
(3)(x+y)2-9
(5)x-8x2-9
(2) 2(x+3y)-(x+3y)-1
(4)x2-(y-1)2
(6)x-16
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