Factorise: x^2+y^2+x+y+2xy

1.	Factorise: x^2+y^2+x+y+2xy
Answer» X² + y² + X + y + 2XY = x² + y² + 2xy + x + y = (x+y)² + (x+y) = (x+y) (x+y+1)

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