Question

If 2x+3y=19 and xy = 3/find 8x^3 +27y^3.)​

Answer 1

Answer:

Step-by-step explanation:

( 2 x - 3 y ) 3 = ( 2x )3 - ( 3y)3 - 3 ( 2x × 3y ) ( 2x - 3y)

(10)3 = 8x3 - 27y3 - 3 (6xy) (10)

1000 = 8x3 - 27y3 - 3 (96)(10)

1000 = 8x3 - 27y3 - 2880

8x3 -27y3 = 2880+1000= 3880

Answer 2

Answer:

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Step-by-step explanation:

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