# 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 19:39, 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