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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

`a ^(2) - 2b ^(2)`

C

`a ^(2) - 2b`

D

`a ^(2) + 2b`

Text Solution

Verified by Experts

The correct Answer is:
B
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