Mathematics
Junior High
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解き方あってますかー?(因数分解です)
(2) az-ab-za+btl
2
= -ab+b +a²-2a+1
= -b (α-1) (a−1)²
-bA + A²
=-A (b = 1)
-(α-1) (b-1)
= (-a +l) (b-1)
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