factorize 8a cube + 27b cube
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Step-by-step explanation:
Solution)8a3- 27 b3
=> (2a)3 - (3b)3
=> (2a - 3b)[(2a)2 + (2a × 3b) + (3b)2] {Using identity : (a)3 - (b)3 = (a + b)(a2 + ab + b2)}
=> (2a - 3b)(4a2 + 6ab + 9b2)
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