What am I missing?

Linear, quadratic, module, parametric equations

What am I missing?

Postby Guest » Mon Jul 10, 2017 7:39 am

Given
ax^2 + bx + c =0 has roots [tex]\alpha,\beta[/tex] ,
Also [tex]\alpha=\beta^2[/tex]
Prove c(a-b)^3 = a(c-b)^3

Using the sum and difference of roots (?) seems to hit a brick wall.

Any help, years since I did anything like this.





Guest
 

Re: What am I missing?

Postby Guest » Mon Jul 10, 2017 7:43 am

Sorry, it's guest again.

I should have written sum and product of roots!
I said it has been some time.

Guest
 

Re: What am I missing?

Postby Guest » Tue Jul 11, 2017 3:12 pm

Did you try using Vieta's formulas?
What happens when you remove the parentheses could you write, please?

Guest
 


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