(n+10)^2 - (sqrt(10) - sqrt(n))^2
= n^2 + 20n + 100 - (10 - 2sqrt(10)sqrt(n) + n)
= n^2 + 20n + 100 - 10 + 2sqrt(10)sqrt(n) - n
= n^2 + 19n + 90 + 2sqrt(10)sqrt(n)
(n+10)^2 - (sqrt(10) - sqrt(n))^2
= n^2 + 20n + 100 - (10 - 2sqrt(10)sqrt(n) + n)
= n^2 + 20n + 100 - 10 + 2sqrt(10)sqrt(n) - n
= n^2 + 19n + 90 + 2sqrt(10)sqrt(n)