Which of the following equals x+xy+(x+xy)y?  

A    x(1+y)2

B    x(2+y+y2)

C    2x(1+y)+y

D    2xy(1+y)

Solution

Correct Answer: Option A

 

x+xy+(x+xy)y = x+2xy+xy2 = X(1+y)2

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