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avatar+1981 

One of the five quadratics below has a repeated root.  (The other four have distinct roots.)  What is the repeated root?

x^2 - 2x + 1

x^2 - 4x - 4

x^2 + 6x - 9

x^2 + 26x + 25

x^2 - 5x + 4

 Jun 9, 2024

Best Answer 

 #1
avatar+1252 
+1

Alright, we just need to find the one with something in the form of (x-a)^2. 

 

First, we have x^2-2x+1. That can be factored to (x-1)^2. 

 

Well, there's our answer. The others have distinct roots. 

 

Thanks! :)

 Jun 9, 2024
 #1
avatar+1252 
+1
Best Answer

Alright, we just need to find the one with something in the form of (x-a)^2. 

 

First, we have x^2-2x+1. That can be factored to (x-1)^2. 

 

Well, there's our answer. The others have distinct roots. 

 

Thanks! :)

NotThatSmart Jun 9, 2024

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