SOLUTION: please show work
-7i(6i-3)
Algebra.Com
Question 53509: please show work
-7i(6i-3)
Answer by mathchemprofessor(65) (Show Source): You can put this solution on YOUR website!
-7i(6i-3)=-42i^2+21i=(-42)x(-1)+21i=42+21i, since i^2=-1
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