1. ## a+bi form

how do you write 68/4+i - 17/4-i in a+bi format?
can anyone explain not just answer this ?
pls

2. $\frac{1}
{{a + bi}} = \frac{{a - bi}}
{{a^2 + b^2 }}$

3. Originally Posted by Ironscorp
how do you write 68/4+i - 17/4-i in a+bi format?
can anyone explain not just answer this ?
pls
hey mate,

Addition for complex numbers is defined as follows,

given two complex numbers z1,z2 where
z1 = a1 + b1i , z2 = a2 + b2i
then
z1 + z2 = (a1 + a2) + (b1 + b2)i
Similarly for subtraction
z1 - z2 = (a1 - a2) - (b1 - b2)i

Hope this points you in the right direction,

Regards,

David

ps - message me if you require any further assistance

4. Thanks bro !