if alpha and beta are the zeros of the polynomial x square - a(x+1)-b. such that alpha +1 Beta +1 =0. find the value of beta
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α+β=a and αβ=(-a-b)
Now (α+1)*(β+1)=0
this means
αβ+(α+β)+1=0
Now substituting value of αβ and α+β from above we get
(a)+(-a-b)+1=0
= a-a-b+1=0
Cancelling a so
b=1 (Ans)
Thank you
Now (α+1)*(β+1)=0
this means
αβ+(α+β)+1=0
Now substituting value of αβ and α+β from above we get
(a)+(-a-b)+1=0
= a-a-b+1=0
Cancelling a so
b=1 (Ans)
Thank you
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