Answer:
D
Step-by-step explanation:
If C represents the number of children you aren't gonna want to multiple like how it shows in option b and you aren't gonna wanna subtract.
If this is supposed to be
Then this can simply be reduced to
by the double angle formula for cosine
The 400th term is 425.There are floor(√400) = 20 squares in the range 1..400, so the 400th term will be at least 420. There are floor(∛420) = 7 cubes in the range 1..400, so the 400th term may be as high as 427. However, there are
numbers that are both squares and cubes. Consequently, the 400th term will be 427-2 =
425.
Answer: is there suposed to be a symbol between the 2x and the 2?