Question 447465
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Hi,
what is the reciprocal of 3-7i 
1/(3-7i) = (3+7i)/(3-7i)(3+7i) = (3+7i)/(9+49) = (3+7i)/58 
Multiplying both numerator and denominator by (3+7i) Note: i^2 = -1

what is the reciprocal of 1 + 6i = 1/(1+6i)
Multiply both numerator and denominator by (1-6i)to simplify
what is the reciprocal of -1-i =  -1/(1+i)
Multiply both numerator and denominator by (1-i)to simplify

Multiplying Numerator and Dnominator by the conjugate of the Denominator:
puts the reciprocal in the desired format
F	First terms
O	Outside terms
I	Inside terms
L	Last terms