Factories these (x+y)^2-1
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Answer:
(x+y+1)(x+y-1)
Step-by-step on:
(x+y)² - 1 = (x+y)² - (1)² [ using identity (a)²-(b)² = (a+b)(a-b) ]
= (x+y+1)(x+y-1)
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