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Find the sum : 2xy + 4x, 3xy + 7z + 6y and 2x + 3y + 2z

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6x+5xy+9y+9z

6x+5xy+9y-9z

6x+5xy-9y+9z

6x-5xy+9y+9z

answer is A.

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Detailed Solution

Given : 2xy + 4x, 3xy + 7z + 6y and 2x + 3y + 2z

By adding, we get :

(2xy + 4x) + (3xy + 7z + 6y) + (2x + 3y + 2z)

= 4x + 2x + 2xy + 3xy + 6y + 3y + 7z + 2z

= 6x + 5xy + 9y + 9z

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