Math 901: Algebra I Unit 1 Test Study Guide
Math 901: Algebra I Unit 1 Test Study Guide
Math 901: Algebra I Unit 1 Test Study Guide
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even root can never equal a negative number, e.g., y − 1=−12has no real<br />
solution.<br />
12. Identify the common ratio of a geometric sequence.<br />
13. Know and apply the explicit formula for geometric sequences:<br />
n−1<br />
A( n) = a1<br />
⋅r<br />
, where ...<br />
th<br />
A( n) = the actual value of the n term<br />
st<br />
a1<br />
= the 1 term<br />
r = the common ratio between consecutive terms<br />
n = the counting number of the term, such as the 3rd term would have n = 3<br />
14. Find a certain term of a given geometric sequence.