Mathematics
Senior High
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数I II
矢印のところがどう変化してるのかわからないので教えてください🙇♀️
-(b-c) a + (b'-c')a - b°c +bc³
=-(b-c) + (b-c) (b'+be+c") a -be (btc) (b-c)
=-(b-c)-(b+be+c² ) a + bc (b+c)}
=-(b-c) {(c-a)b-c (c-a) b-a ((c+α) ((-a)}
-(b-c)(-a)b+cb-a (c+a)}]
=-(b-c) ((-a) (b-a) {b+ (c+a) } = (a-b) (b-c) (c-a) (a+b
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