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Question

Add: 2x(z-x-y)and2y(z-y-x)


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Solution

To add : 2x(z-x-y)and2y(z-y-x)

Firstly we will multiply the common term with the brackets given, and then add the like terms with one another, we have

=2x(z–x–y)+2y(z–y–x)=(2x×z)–(2x×x)–(2x×y)+(2y×z)–(2y×y)–(2y×x)=2xz–2x2–2xy+2yz–2y2–2yx=2xz–4xy+2yz–2x2–2y2

Hence, On adding 2x(z-x-y)and2y(z-y-x) , we get 2xz-4xy+2yz-2x2-2y2.


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