Question

Multiply and simplify -12i x 3i

Answer 1

-36i^2 because -12 X 3= -36 and i X i = i^2

Answer 2

-12i×3i=-12×3×i×i
12×3=36 i×i=i²
So in the case of basic algebra, it's 36i²

If i is √-1 then i² is √-1×√-1 which is -1
36×-1=-36