# Multiply 6i*(-10i)

6i⋅(-10i)
Multiply 6i(-10i).
Multiply -10 by 6.
-60ii
Raise i to the power of 1.
-60(i1i)
Raise i to the power of 1.
-60(i1i1)
Use the power rule aman=am+n to combine exponents.
-60i1+1