Question

Factorise x - y - x^2 + y^2

Answer 1

Answer:

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Answer 2

Answer:

(x - y) [1 - x - y]

Step-by-step explanation:

x - y - x^2 + y^2

(x - y) - (x^2 - y^2)

(x - y) - [(x + y) (x - y)]

(x - y) [1-(x + y)]

(x - y) [1 - x - y]