Question

How do you multiply `(3i)(-2+6i)`?

Answer 1

-6i-18

Explanation:

i is the imaginary number `sqrt-1`
So 3x (`sqrt-1` )x -2 = -6x (`sqrt-1` )=-6i

3x (`sqrt-1`)x 6 x (`sqrt-1`) =18 x-1

=-18

Answer. -6i -18