SOLUTION: I need help on this problem please: (5-4i) and it has the squared sign outside the parentheses by the 4i.Thanks for your help in advance LH and have a great day!

Question 131966: I need help on this problem please: (5-4i) and it has the squared sign outside the parentheses by the 4i.Thanks for your help in advance LH and have a great day!
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Simplify:
Use the FOIL method to multiply.
Combine like-terms.
Replace with its equivalent, -1
Simplify.

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