x - 1 = 8(y - 1) y^2 - 1 = 8y - 8 (∵x=y^2) y^2 - 8y -1 +8 = 0 y^2 - 8y +7 = 0 y^2 - y -7y + 7 = 0 y (y-1) -7(y-1) = 0 (y -7) (y-1) = 0 ∴ either (y-7) =0 OR (y-1) = 0 ∴ y = 7 OR y= 1 i) If y= 7 , then x = y^2 = (7)^2 = 49 ii) If y = 1, then x = y^2 = (1)^2 = 1

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