Add $5 x^{2} + 3 x y + 2 y^{2}$ and $2 y^{2} - x y + 4 x^{2}$

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Solution

Write the expression one under another so that like times align in columns. Then add

$5 x^{2} + 3 x y + 2 y^{2}$
$+$ $4 x^{2} - x y + 2 y^{2}$
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$9 x^{2} + 2 x y + 4 y^{2}$
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Similar questions

5 x^{2} + 3 x y + 7 y^{2}, 3 x^{2} + x y + 2 y^{2}

6 x^{2} - 3 x y + 4 y^{2}

2 y^{2} + x y - 4 x^{2}

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4 x^{2} + 2 \sqrt{3} x y + 2 y^{2} - 1 = 0

5 X^{2} + Y^{2} = 1

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