To find the value of the expression when m = 6, let's substitute m = 6 into the expression:
-4 * 3√(-6 * 6²)
First, calculate 6²:
6² = 6 * 6 = 36
Now, find the cube root of -6 * 36:
3√(-6 * 36) = 3√(-216)
The cube root of -216 is -6 because (-6) * (-6) * (-6) = -216.
Now, substitute this back into the expression:
-4 * (-6) = 24
So, when m = 6, the value of the expression is 24.
Therefore, the correct answer is:
B. 24