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When x^2 + ax + b is divided by (x - 1) ...

When `x^2 + ax + b` is divided by (x - 1) , the remainder is 15 and when `x^2 + bx + a` is divided by (x + 1), the remainder is - 1, then the value of `a^2 + b^2` is:

A

100

B

20

C

8

D

16

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