Question

please step by step solve this question​

Answer 1

Answer:

1st we can reduce x^2 + 10x+16 for this we can use formula x=-b +/- √b^2-4ac /2a and on doing this we get x= 8, 2 that is x-8,x-4 now we can reduce x^2 -64 to (x-8)(x+8) from top and bottom x-8 get cut and balance will be x+8/x+4now use limit put x= 4 so we get answer as 2