Question

ADD
${4x}^{2} - 5xy + {3y}^{2} \\ {8x}^{2} + 7xy - {6y}^{2} \\ { - 2x}^{2} - 9xy + {13y}^{2}$
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Answer 1

Answer:

$4x^2 - 5xy + 3y^2$

$+ 8x^2 + 7xy - 6y^2$

$= 12x^2 + 2xy - 3y^2$

Hope it helps

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