#3**+1 **

Substituting for the values of a and b we get: \((4-2i+7)-2(3+2i-5i)\)

Simplifying, we get: \(\color{brown}\boxed{4i+5}\)

BuilderBoi Apr 14, 2022

#2**-2 **

You can just assume i as a variable, because you can't really do anything with it

qjin27 Apr 14, 2022

#3**+1 **

Best Answer

Substituting for the values of a and b we get: \((4-2i+7)-2(3+2i-5i)\)

Simplifying, we get: \(\color{brown}\boxed{4i+5}\)

BuilderBoi Apr 14, 2022