Factor out 3x. In other words, divide each term by 3x.
21x^3 + 18x^2 + 9x
Note: instead of dividing by 3x you can split it up; divide by 3 and then divide by x.
21x^3 / 3 = 7x^3
7x^3 / x = 7x^2
18x^2 / 3 = 6x^2
6x^2 / x = 6x
9x / 3 = 3x
3x / x = 3
A. 7x^2 + 6x + 3
Answer:
6
Step-by-step explanation:
hope this helps, have a good day
We let
a1 = first term
a2 = second term
a3 = third term
and so on
We are given with
a1 + a2 = 26
S5 (sum of five terms) = 35
The formula for the sum of terms is
Sn = (a1 + an) (n/2)
SO
35 = (a1 + a5) (5/2)
The formula for an arithmetic term is
an = a1 + d(n-1)
For
a2 = a1 + d
we know that
a1 + a2 = 26
Simply for a1, a2, and d. Then use the formula to get the other items asked.
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