If ax+by -2=0 and ax+by =1, where a ne 0...

If `ax+by -2=0` and `ax+by =1`, where `a ne 0, b ne 0`, then what is `(a^(2)x+b^(2)y)` equal to ?

A

a+b

B

2ab

C

`a^(3)+b^(3)`

D

`a^(4)+b^(4)`

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