What is (2b)3 where b=3?

1 Answer
Dec 16, 2016

216

Explanation:

2b means 2×b.

Note that (2b)3 and 2b3 are different. In the first case, the power, 3 is applied to the multiple of 2 and b, whereas in the second case, the power is applied to b only.

Coming back to the question,

(2b)3=(2×3)3=63=6×6×6=216