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Addition and Subtraction of Algebraic Expression

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Question

ExampleAdd $(2 x^{2} + 6 y + 3 x y), (3 x^{2} - 5 x y - x)$ and $(6 x y + 5)$ .

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Solution

$(2 x^{2} + 6 y + 3 x y) + (3 x^{2} - 5 x y - x) + (6 x y + 5)$
$(2 x^{2} + 3 x^{2}) + (3 x y - 5 x y + 6 x y) + 6 y - x + 5$
$5 x^{2} + 4 x y - x + 6 y + 5$

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