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[@RyanLewis-Johnson-wq6xs]

X^2-Y^2=9 XY=20 X+Y=±9 X+Y=i X=±5, Y=±4

[@RealQinnMalloryu4]

(y ➖ 3x+3). 2^10 2^2^5 1^2^1 2^1 (xy ➖ 2xy+1).