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The centre of the ellipse (x+y-3)^(2)/9+...

The centre of the ellipse `(x+y-3)^(2)/9+(x-y+1)^(2)/16=1` is

A

(-1,2)

B

(1,-2)

C

(-1,-2)

D

(1,2)

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The correct Answer is:
D
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