Question

If x and y are 2 positive real numbers such that 125 x cube minus 8y cube = 784 and 5x square y minus 2xy square = 24 , then evaluate 5x - 2y.

Answer 1

Answer:

8x3 + 27y3 = 730 and 2x2y + 3xy2 = 15 then evaluate 2x + 3y

(2x + 3y)3 = 8x3 + 27y3 + 18 x 2x2y + 18 x 3xy2

(2x + 3y)3 = 730 + 18 (15 ) = 730 + 270 = 1000

(2x + 3y)3 = 103

2x + 3y = 10

HOPE THIS HELPS

Answer 2

Step-by-step explanation:

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