Question

you don't know the answer please don't give if you know the answer please give the answer please plz plz ​​​

Answer 1

Answer:

$9 {x}^{2} + 49 {y}^{2} = 58 \\ \\ \\ 9 {x}^{2} + 49 {y}^{2} = 16$

Step-by-step explanation:

$3x - \frac{7}{ - x} = 10 \\ \\ 3 {x}^{2} + 7= - 10x \\ \\ 3 {x}^{2} + 10x + 7 = 0 \\ \\ 3 {x}^{2} + 3x + 7x + 7 = 0 \\ \\ 3x(x + 1) + 7(x + 1) = 0 \\ \\ (3x + 7)(x + 1) = 0 \\ \\ x = - 1 \: \: \: \: \: \: \: \: \: \: \: x = - \frac{7}{3}$

$y = 1 \: \: \: \: \: \: \: y = \frac{3}{7} \\ \\ \\ \\ \\ \\ 9 {x}^{2} + 49 {y}^{2} = 9 + 49 = 58 \: \: \: \: \: \: \: \: \: \: \: \: \: \: or \: \: \: \: 9 {x}^{2} + 49 {y}^{2} = 9 {( - \frac{7}{3} })^{2} + 49 {( \frac{3}{7} })^{2} \\ \\ = 7 + 9 \\ \\ = 16$