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  • Add: 2x (z – x – y) and 2y (z – y – x)

Q : 5    (b)  Add:  \small 2x(z-x-y)   and  \small 2y(z-y-x)

Answers (1)

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Firstly, open the brackets:  

                      \small 2x(z-x-y) = 2xz -2x^2-2xy

and               \small 2y(z-y-x) = 2yz-2y^2-2xy

Adding both, we get :   

                      \small 2xz -2x^2-2xy +2yz-2y^2-2xy

or                  \small = -2x^2-2y^2-4xy + 2xz+2yz

Posted by

Devendra Khairwa

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