Easy, showing work,
using the method FOIL (First,Outer,Inner, Last)
Take, (x+3)(x+5) and multiply,
First,
x*x=

Outer,
x*5=5x
Inner,
3*x=3x
Last,
3*5=15
Add the terms together,

+8x+15 (

+5x+3x+15)
Thus, your answer.
Recall the Maclaurin expansion for cos(x), valid for all real x :

Then replacing x with √5 x (I'm assuming you mean √5 times x, and not √(5x)) gives

The first 3 terms of the series are

and the general n-th term is as shown in the series.
In case you did mean cos(√(5x)), we would instead end up with

which amounts to replacing the x with √x in the expansion of cos(√5 x) :

Answer:
it matches with table D
Step-by-step explanation:
(i think i'm sorry if i get you wrong)
246-79-104= 63
63 People came to swim on the 3rd day
Answer:
Step-by-step explanation:
The volume of the box is 64 in³
Then its side is ∛64 = 4 in
A dice has side of 1 in, so 4 dice can fit along one side as 4/1 = 4