How to solve (-5i) * (6i)

Multiply 66 by - 5 - 5 to get - 30 - 30. - 30 i i - 30 i i Raise ii to the power of 11. - 30 (i1 i) - 30 i1 i Raise ii to the power of 11. - 30 (i1 i1) - 30 i1 i1 Use the power rule am an = a m+n am an = a m+n to combine exponents. - 30 i 1+1 - 30 i 1+1 Add 11 and 11 to get 22. - 30 i2 - 30 i2 Rewrite i2 i2 as - 1 - 1. - 30 ⋅ - 1 - 30 ⋅ - 1 Multiply - 30 - 30 by - 1 - 1 to get 3030. 30