9514 1404 393
Answer:
(a) -23
Step-by-step explanation:
The sequence is arithmetic with first term 3 and common difference -2. Then the general term is ...
an = a1 +d(n -1)
an = 3 -2(n -1)
and the 14th term is ...
a14 = 3 -2(14 -1) = 3 -2(13) = 3 -26
a14 = -23
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Answer attached in the file...
Hope this helps..
Answer:
Step-by-step explanation:
note :
( a + b )^3 = a^3 +b^3 +3 a²b +3b²a + b^3...(*)
the condition is : r = 1 and p=1
put : x= a and b = 1 in (*) you have :
(x + 1)^3 = x^3 +3x² +3x +1
the zeros is : x = - 1
bcause : x^3 +3x² +3x +1 = 0 .... (x + 1)^3 = 0 so : x = - 1
