Question

$can \: some \: solve \: this \: please. \: its \: very \: important$
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Answer 1

Answer:

$8 {x}^{2} + 7xy - 6 {y}^{2} + 4 {x}^{2} - 3xy + 2 {y}^{2} - 4 {x}^{2} + xy - {y}^{2} \\ 8 {x}^{2} + 4 {x}^{2} - 4 {x}^{2} - 6 {y}^{2} + 2 {y}^{2} - {y}^{2} + 7xy - 3xy + xy \\ = 8 {x}^{2} - 5 {y}^{2} + 5xy$

Step-by-step explanation:

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