find the cube of each of the following binomial expression (2a+b)
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Answer:
Step-by-step explanation:
using the identity (x+y)³=x³+y³+3xy(x+y)
(2a+b)³
= (2a)³+(b)³+3×2a×b(2a+b)
= 8a³+b³+6ab(2a+b)
= 8a³+b³+12a²b+6ab²
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