SOLUTION: express in the form a+bi: 1+2i/ 1- square root of -64

Question 993057: express in the form a+bi:

1+2i/ 1- square root of -64
Answer by Edwin McCravy(20055) (Show Source): You can put this solution on YOUR website!
1+2i/ 1- square root of -64



Change  to  to  to  to 



Multiply by the conjugate of the denominator over itself 
which we can do because that is just multiplying by 1.



Use FOIL on top and bottom:



Combine like terms and eliminate terms that have 0 sum:



Substitute -1 for i²





Combine like terms:



To express in terms of a+bi, break into two fractions:



Reduce the fractions:



Move the i factor in the second term from the numerator
to the right:

 

Edwin

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