Answer:
1 - 3 terms (I'm not really sure because you need to show me the options.)
2 - 1/2, 1, 7
Step-by-step explanation:
A term is a single number, variable, or a number multiplied by a variable.
The coefficients are numerical values that are placed behind a variable to multiple them.
Answer:
1:4
Step-by-step explanation:
Answer:
x = 8
Step-by-step explanation:
a. Notice that
1/(1*2) = 1/2 = 1 - 1/2
1/(2*3) = 1/6 = 1/2 - 1/3
1/(3*4) = 1/12 = 1/3 - 1/4
and so on, which suggests the n-th term of the sum can be written as

Then the sum itself is telescoping:



b. The proof is trivial:

so the formula found in (a) is correct.