Difference between revisions of "2013 AMC 10B Problems/Problem 19"
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<math> \textbf{(A)}\ -7-4\sqrt{3}\qquad\textbf{(B)}\ -2-\sqrt{3}\qquad\textbf{(C)}\ -1\qquad\textbf{(D)}\ -2+\sqrt{3}\qquad\textbf{(E)}\ -7+4\sqrt{3} </math> | <math> \textbf{(A)}\ -7-4\sqrt{3}\qquad\textbf{(B)}\ -2-\sqrt{3}\qquad\textbf{(C)}\ -1\qquad\textbf{(D)}\ -2+\sqrt{3}\qquad\textbf{(E)}\ -7+4\sqrt{3} </math> | ||
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+ | [[2013 AMC 10B Problems/Problem 19|Solution]] |
Revision as of 18:20, 23 February 2013
Problem
The real numbers form an arithmetic sequence with
The quadratic
has exactly one root. What is this root?