Difference between revisions of "2021 AMC 10B Problems/Problem 2"
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== Video Solution by OmegaLearn == | == Video Solution by OmegaLearn == | ||
https://youtu.be/Df3AIGD78xM | https://youtu.be/Df3AIGD78xM | ||
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+ | {{AMC10 box|year=2021|ab=B|before=[[2021 AMC 10A]]|after=[[2022 AMC 10A]]}} |
Revision as of 23:31, 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
Video Solution by OmegaLearn
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