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(i) The number x is 2 more than the number y. If the sum of the squares of x and y is 34; find the product of x and y.

(ii) If 2x - 3y = 10 and xy = 16; find the value of 8x³ - 27y³.

(iii) If x > 0 and x² + 1÷9x² = 25/36, find: x³ + 1÷27x³

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by samharsh

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