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avatar+124 

Anna made an error in determining the polynomial equation of smallest degree whose roots are

-4, -2, -1/2 and 2. 
 

- Review Anna's work, identify the error and correct all work from that point forward that is affected by this error.

- Include at least one sentence explaining her error, please try to use mathematical vocabulary. 

 

(x+4)(x+2)(2x+1)(x-2)=0

(x^2-4)(x^2+9x+4)=0

x^4+9x^3+4x^2-4x^2-36x-16=0

x^4+9x^3-36x-16=0

 

Hi, thank you so much for reading :)) i need help on this 

 Aug 15, 2023
 #1
avatar+126971 
+1

The error occurs in the  second step

(x+ 4) ( 2x +1) (x+2)(x - 2) = 0

(2x^2 + 9x + 4) (x^2 - 4) = 0

2x^4 + 9x^3 + 4x^2 - 8x^2 - 36x -16 = 0

2x^4 + 9x^3 - 4x^2 -36x - 16  = 0

 

cool cool cool

 Aug 15, 2023
 #2
avatar+124 
0

I appreciate you so much :))

thebestchesscat  Aug 15, 2023
 #3
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+2

Of course you "appreciate" CPhill. You appreciate anything so long as it serves you and helps you cheat on your homework, throwing around phrases like "please" or "thank you" to appear genuine and innocent while at heart you are just a lazy and malicious idiot. The second anything useful loses its value, you will dump it like the materialistic bitch you are. So watch yourself CPhill, you keep on feeding the bears, and one day they will eat you as they are nothing more than ungrateful animals. Remeber that!

Guest Aug 15, 2023
edited by Guest  Aug 15, 2023

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