If alpha and beta are the roots of x^(...

If `alpha and beta ` are the roots of `x^(2)-ax+b^(2)=0` , then `alpha^(2) +beta^(2)` is equal to_______

A

`a^2-2b^2`

B

`2a^2-b^2`

C

`a^2-b^2`

D

`a^2+b^2`

Verified by Experts

The correct Answer is:

A

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