Question

# Using the identity (x+a)(x+b)=x2+(a+b)x+ab, find out the following products:(a+1x)(a+1y)

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Solution

## We need to find product of (a+1x)(a+1y) by using identity (x+a)(x+b)=x2+(a+b)x+abUsing above stated property, we have(a+1x)(a+1y)=a2+(1x+1y)a+1xy=a2+a(x+yxy)+1xy

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