Difference between revisions of "2010 AMC 12A Problems/Problem 4"
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Obviously only <math>\boxed{\textbf{(D)}}</math> is positive. | Obviously only <math>\boxed{\textbf{(D)}}</math> is positive. | ||
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+ | ==Video Solution== | ||
+ | https://youtu.be/13Hp_RPhX4Q | ||
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+ | ~Education, the Study of Everything | ||
== See also == | == See also == |
Revision as of 19:49, 27 October 2022
Contents
Problem
If , then which of the following must be positive?
Solution
is negative, so we can just place a negative value into each expression and find the one that is positive. Suppose we use .
Obviously only is positive.
Video Solution
~Education, the Study of Everything
See also
2010 AMC 12A (Problems • Answer Key • Resources) | |
Preceded by Problem 3 |
Followed by Problem 5 |
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | |
All AMC 12 Problems and Solutions |
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