Use the grouping method to factor this polynomial x ^ 3 + 2x ^ 2 + 7x + 14

B. (+7)(x+2)

Step-by-step explanation:

The greates common factor between 7 and 14 is 7 so you know that one of the terms is going to be 7....but what times 7 equals 14...2

So we know that in one set of parentheses its going to be (something +2) and in another (something +7)

Well if we know that one is going to be 2, how do we go from 2 to 2.....2 times equals

So now we know that one set of parentheses is going to be (something + 2) times (+7)

So lastly, we have to find out how to get but since we already have a in the second set of parentheses all we have to do is put a x in the first set because x times

Hope this helps!

29 mil

step-by-step explanation:

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2