Question

Question in screenshot!

Answer 1

so than you see x^2 from the first equation will be equal

x^2 = 16 -y^2

so than substitute it in place of x^2 inside second equation and try it so what will get

Answer 2

do you can ending it ?

Answer 3

Im still confused @jhonyy9

Answer 4

the second equation is

x^2 y^2
---- - ----- = 1
4 25

so and from the first equation you get x^2 = 16-y^2

yes ?

so just substitute this x^2 value in place of x^2 inside second equation and see what will get for y and solve it for x after this too

Answer 5

ok. ?

Answer 6

First... Can you get x^2 alone in the first equation? All you have to do is subtract y^2 on both sides.

Answer 7

@lilkg77 : I'd suggest you think about what you already know and understand and what you don't, and then ask some pertinent questions.

Basically you'll need to solve the first equation for x^2 (this has already been done, above. Next, you'll need to throw out "x^2" in the second equation and replace it with the result of your solving the first equation for x^2. Done.