factorise 9-2xy-(x^2+y^2)
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Answer:
(3-x-y) *(3+x+y)
Step-by-step explanation:
Expand: 9-2xy-x^2-y^2
Factorize: 9- (x^2+2xy+y^2
Factorize: 9-(x+y)^2
Factorize: (3-(x+y)) *(3+(x+y))
Factorize: (3-x-y) *(3+x+y)
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