Factorize :
x2 + y - xy - x
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Given,
⇒ x2 + y - xy - x
⇒ x2 - x - xy + y
⇒ x(x - 1) - y(x - 1)
⇒ (x - 1)(x - y).
Hence, x2 + y - xy - x = (x - 1)(x - y).
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