Question

(x+y)-(x+y)^2 factorise
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Answer 1

Answer:

$(x + y) - {(x + y)}^{2} \\ = x + y - {x}^{2} - {y}^{2} \\ = x - {x}^{2} + y - {y}^{2} \\ = x(1 - x) + y(1 - y)$

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