Question:Factorise `a^2` +2ab +`b^2` 

Answer `a^2` +2ab +`b^2` =`a^2` + ab +ab +`b^2` =a(a+b) +b(a+b) =(a+b) (a+b) =`(a+b)^2` 

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Factorise `a^2` +2ab +`b^2`
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