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Addition and Subtraction of Algebraic Expression

Solve : 2x2...

Question

Solve : $2 x^{2} - x y + 6 y - 4 y + 5 x y - 4 x + 6 x^{2} + 3 y$ .

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Solution

$2 x^{2} - x y + 6 y - 4 y + 5 x y - 4 x + 6 x^{2} + 3 y$
Rearranging the like terms together,
$\Rightarrow$ $(2 x^{2} + 6 x^{2}) + (- x y + 5 x y) + (6 y - 4 y + 3 y) - 4 x$
$\Rightarrow$ $8 x^{2} + 4 x y + 5 y - 4 x$

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