Difference between revisions of "2021 AMC 10B Problems/Problem 2"
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Summed up you get <math>\boxed{\textbf{(D)} ~4\sqrt{3}}</math> ~bjc and abhinavg0627 | Summed up you get <math>\boxed{\textbf{(D)} ~4\sqrt{3}}</math> ~bjc and abhinavg0627 | ||
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==Video Solution== | ==Video Solution== | ||
https://youtu.be/HHVdPTLQsLc | https://youtu.be/HHVdPTLQsLc | ||
~Math Python | ~Math Python |
Revision as of 18:39, 11 February 2021
Problem
What is the value of
Solution
Note that the square root of a squared number is the absolute value of the number because the square root function always gives a positive number. We know that is actually negative, thus the absolute value is not but . So the first term equals and the second term is .
Summed up you get ~bjc and abhinavg0627
Video Solution
https://youtu.be/HHVdPTLQsLc ~Math Python