Tolong bantuannya ya, cek foto :(

1 . f(x) = x^2 + ax - 10
f'(x) = 2x + a
f'(5) = 2×5 + a = 13
10 + a = 13
a = 13 - 10
a = 3

4. f'(x) =
2(2x + 2) - (2×5 - 1)
______________
(x + 2)^2