Can I have the answer of the 22nd one...
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Answer:
(3x)³-3.(3x)². 1/6 +3. 3x.(1/6)²-(1/6)³
=(3x-1/6) ³
=(3x-1/6)(9x²+x/2+1/36)
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The answer is above^^^read what the guy before me has written
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