Question

if 2x-3y=10 and xy=16 find the value of 8x cube-27y cube

Answer 1

( 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:

Step-by-step explanation