Question

add from chapter algebraic expression

Answer 1

1-
$\frac{9}{4} {x}^{2} - 11xy + {y}^{2} - 5xy + \frac{6}{5} {y}^{2} - 3 {x}^{2} + 11 {y}^{2} - \frac{2}{3} xy - 5 {x}^{2} + 3 = \frac{9}{4} {x}^{2} - 3 {x}^{2} - 5 {x}^{2} - 11xy - 5xy - \frac{2}{3} xy + {y}^{2} + \frac{6}{5} {y}^{2} + 11 {y}^{2} \\ = - \frac{23}{4} {x}^{2} - \frac{50}{3} xy + \frac{66}{5} {y}^{2}$
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