Question

$8 {x}^{2} + 7xy - 6 {y}^{2} + 4 {x}^{2} - 3xy + 2 {y}^{2} and \: - 4 {x}^{2} + xy - {y}^{2}$
add the following equation​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

.

$\underbrace{ \underbrace{\underbrace{ \underbrace{\underbrace{ \underbrace{\underbrace{ \underbrace{\left.\begin{array}{l}x \leq 20000 \\ y \leq 40000 \\ x+y \leq 45000 \\ 3 x+y \leq 66000 \\ x \geq 0, y \geq 0\end{array}\right\} \}}}}}}}}}$