Question

Please help I’ll give brainlyist

Answer 1

Answer:

The second choice

Step-by-step explanation:

Answer 2

Answer:

+ 6$x^{2}$ and -10$y^{2}$

Step-by-step explanation:

3$x^{2}$ + 5$y^{2}$ {} + 3 {} + 4$y^{2}$ + 6 = 9$x^{2}$ - $y^{2}$+ 9

3$x^{2}$ + 9$y^{2}$ {} + 9 {}  = 9$x^{2}$ -  $y^{2}$+ 9

+ 6$x^{2}$    -10$y^{2}$

3$x^{2}$ + 9$y^{2}$ + 6$x^{2}$ + 9 - 10$y^{2}$ = 9$x^{2}$ - $y^{2}$+ 9

9$x^{2}$ - $y^{2}$+ 9 = 9$x^{2}$ - $y^{2}$+ 9