Question

if x+3y=6 then shows that x cube + 27y cube +54xy=216​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

SOLUTION ::

x + 3y = 6

Cubing both sides

x³ + (3y)³ + 3 × x × 3y (x + 3y) = 6³

x³ + 27y³ + 3 × x × 3y ×6 = 6³

x³ + 27y³ + 54xy = 216

Hence the proof follows