How do you identify the 8th term of the geometric sequence -2, -12, -72 ...?
1 Answer
Jun 23, 2018
Explanation:
#"the n th term of a geometric sequence is"#
#•color(white)(x)a_n=ar^(n-1)#
#"where a is the first term and r the common ratio"#
#"here "a=-2" and "r=(-12)/(-2)=(-72)/(-12)=6#
#a_8=-2xx6^7=-559872#
