Question

Simplify the expression show your work
2-4i
----
1-2i

Answer 1

so you need multiplie the numerator and denominator by conjugate of denominator

do you know wath will be this conjugate of ?

Answer 2

No i dont really know how to do any of it

Answer 3

for you can eliminate the term of i from denominator you need multiplie this by conjugate

so you dont have learned it again ?

Answer 4

look for example if a+ib wann being the complex number so than the conjugate of it will be a-ib

this will help you finding the conjugate of denominator from your exercise

Answer 5

i was taught it but ive never grasped it..but that i is ment for imaginiary

Answer 6

so than can you solve it now here ?

Answer 7

the conjugate is 1+2i

multiplie the numerator and denominator by and please check what will get

ok ?

Answer 8

ok its still kinda confusing

Answer 9

2-4i (2-4i)(1+2i)
---- = ----------- =
1-2i (1-2i)(1+2i)

can you continue ?

Answer 10

2+4i-4i+8
----------- =
1+2i-2i+4

can you continue it now ?