Question

Totally lost with complex numbers. Stayed home sick so I missed the lesson. The book is confusing. So how do I simplify (4-2i)-(-3+i)

Answer 1

(4-2i)-(-3+i)


4-2i+3-i


(4+3)+(-2i-i)


7-3i


So (4-2i)-(-3+i) = 7-3i

Answer 2

distribute the - in from of the second complex number, and then combine real and imaginary parts
=4-2i+3-i
=7-3i

Answer 3

treat "i" as you would any other variable when adding like this

Answer 4

in fact "i" works out fine if you reat it as another variable; just when simplifying, understand that i^2 = -1

Answer 5

Kay thanks