Factorise ( 3a + 4b )^3
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Answer: 9a³ + 16b³ + 108a²b + 144ab²
Step-by-step explanation:
(the question should be to expand not factorize as it is already in factor form)
Formula used: (a+b)³ = a³ + b³ + 3ab(a+b)
(3a + 4b)³
= 9a³ + 16b³ + 3(3a)(4b)(3a+4b)
= 9a³ + 16b³ + 36ab(3a+4b)
= 9a³ + 16b³ + 108a²b + 144ab²
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