Simplify the expression. (−6i)(3i)

Answer 1

To simplify the expression (-6i)(3i), we can use the fact that the product of two imaginary numbers is equal to a real number.

(-6i)(3i) = (-6)(3)(i)(i) = -18(i)(i)

Since i represents the imaginary unit, where i^2 = -1, we can substitute -1 for (i)(i) in the expression.

-18(i)(i) = -18(-1) = 18

Therefore, the simplified expression is 18.