explain all the work please
3. Find the limit, If It exists, or show that the limit does not exist. (x-2)²-4(y + 1)² (x3′)+(3,2) (x − 2)² +7(y + 1)² b. (x - 2)² - 4(y + 1)² (x,y)-(2,-1) (x - 2)² +7(y + 1)²