Question

1. 9(x + y)2 – 16(x – 2y)2​

Answer 1

Answer:

9x+2y-16x-4y

-7x-2y

hope it help you

Answer 2

Answer:

16(x-y)²-9(x+y)²

Statement 1: Two ellipses `x^2/(16)+y^2/9=1` and `x^2/9+y^2/(16)=1` are congruent. Statement 2: `x^2/(16)+y^2/9=1` and `x^2/9+y^2/(16)=1` have same eccentricity