Mathematics
Senior High
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早めにお願いします🙇♀️🥺
20
練習
24
3
+vs+vxε-³x
次の式を因数分解せよ。
(1) x2+xy-4x-y+3
T
+(1
1
B
=(x+2)p+ (+2)(x-1)
= (x+2) {y+(x-1)}
共
#
=(x+2)(x+y-1)+(x+を
(2) x2+3ax-9a-9
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