Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.
cos
Х
O A. 3 + 2 cos 2x + cos 4x/
8
B. 3+4 cos 2x + cos 4x/
8
C. 2-4 cos 2x + cos 4x/
8
D.
3-4 cos 2x + cos 4x/
8

i really dont know

step-by-step explanation:

exactly you go it

step-by-step explanation:

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3