Difference between revisions of "2021 AIME II Problems/Problem 4"

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==Solution 2==
 
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==Solution 3==
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==Solution 3 (Somewhat Bashy)==
  
 
==See also==
 
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{{AIME box|year=2021|n=II|num-b=3|num-a=5}}
 
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Revision as of 01:22, 23 March 2021

Problem

There are real numbers $a, b, c,$ and $d$ such that $-20$ is a root of $x^3 + ax + b$ and $-21$ is a root of $x^3 + cx^2 + d.$ These two polynomials share a complex root $m + \sqrt{n} \cdot i,$ where $m$ and $n$ are positive integers and $i = \sqrt{-1}.$ Find $m+n.$

Solution 1

Conjugate root theorem

Solution in progress

~JimY

Solution 2

Solution 3 (Somewhat Bashy)

See also

2021 AIME II (ProblemsAnswer KeyResources)
Preceded by
Problem 3
Followed by
Problem 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
All AIME Problems and Solutions

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