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If alpha and beta are the roots of x^(2)...

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)`

Text Solution

Verified by Experts

The correct Answer is:
A
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