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Factorise: 1 + 2x + x^2

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Factorise: 1 + 2x + x2

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We rewrite it as x2 + 2x + 1 

We solve by using the formula (a+b)2 = a2 + b2 + 2ab We get, 

x2 + (1)2 + 2 (x) (1) 

= (x+1)2 

= (x+1) (x+1)

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