Question

if 3 X + 2 Y is equal to 12 and X Y is equal to 6 find the value of 27 x cube + 8 y cube

Answer 1

3x + 2y = 12
xy = 6

3x = 12/2 = 6
x = 6/3 = 2
x = 2
3x = 6
2y = remaining 12 - 6 that is 6 so 6/2 = 3
y = 3

So, y = 3 x = 2

So, 27 (2) cube + 8 (3) cube
= 54 cube + 24 cube
= 157,464 + 13,824
= 171,288

Hope this helps, if it does,

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