Factorise (2a+3b)³-(2b-3b) ³

1.	Factorise (2a+3b)³-(2b-3b) ³
Answer» Same answer ?? Step by step solution :Step 1 : \xa01.1 Evaluate : (2a+3b)3 = 8a3+36a2b+54ab2+27b3 1.2 Evaluate : (2a-3b)3 = 8a3-36a2b+54ab2-27b3\xa0 Step 2 :Pulling out like terms :\xa02.1 Pull out like factors\xa0: 72a2b + 54b3 = 18b\xa0•\xa0(4a2\xa0+ 3b2)\xa0Final result : 18b • (4a2 + 3b2)

Answer» Same answer ??
Step by step solution :Step 1 :

\xa01.1 Evaluate : (2a+3b)3 = 8a3+36a2b+54ab2+27b3 1.2 Evaluate : (2a-3b)3 = 8a3-36a2b+54ab2-27b3\xa0

Step 2 :Pulling out like terms :\xa02.1 Pull out like factors\xa0: 72a2b + 54b3 = 18b\xa0•\xa0(4a2\xa0+ 3b2)\xa0Final result :

 18b • (4a2 + 3b2)

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