I don't know what you mean by f. Do you mean f=sqrt(-1) ? If so, then you have 12f^2 or -12.
If f is something else, I have no idea what the answer is.
Simplify the expression.
(-3f)(-4f)
Answers:
a. 12
b. -12
c. 12i
d. -12i
3 answers
My mistake, it's (-3i)(-4i)
well, that's obviously 12i^2 = -12