answer this step by step
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a - 27ab³
=> a(1-27b³)
=> a[ (1)³ - (3b)³ ]
=> a[(1-3b)(1+1.3b+(3b)²]
=> a(1-3b)(1+3b+9b²)
So, option (a) is correct ✔️✔️
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Answer:
(a) a [(1-3b)(1+3b+9bsquare)]
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