x - 1 - ( x - 1 )^2 + ax - a
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1
Answer:
(x−1)−(x−1)
2
+a(x−1)
=(x−1)(1−(x−1)+a)
=(x−1)(1−x+1+a)
=(x−1)(2+a−x)
Step-by-step explanation:
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