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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

 Dec 18, 2023

Best Answer 

 #1
avatar+828 
+1

 

x2 – 2x + 1 has a repeated root.  Factor to (x – 1)(x – 1)   

 

or another way of saying that is (x – 1)2  and the root is 1.  

 

 

edited to add:  The root is 1 if x2 – 2x + 1  equals zero.  

.

 Dec 18, 2023
edited by Bosco  Dec 18, 2023
 #1
avatar+828 
+1
Best Answer

 

x2 – 2x + 1 has a repeated root.  Factor to (x – 1)(x – 1)   

 

or another way of saying that is (x – 1)2  and the root is 1.  

 

 

edited to add:  The root is 1 if x2 – 2x + 1  equals zero.  

.

Bosco Dec 18, 2023
edited by Bosco  Dec 18, 2023

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