If alpha, beta are the roots of x^(2)-(a...

If `alpha, beta` are the roots of `x^(2)-(a-2)x-(a+1)=0` where 'a' is a variable then the minimum value of `alpha^(2)+beta^(2)` is

A

1

B

3

C

5

D

7

Verified by Experts

The correct Answer is:

C

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