Question

simplify 5 over 4 + 3i and express in a + bi form. I already took the conjugate and got 20-5i/25. how do I express in a+bi form? am I finished?

Answer 1

\[\frac{20-5i}{25}=\frac{20}{25}-\frac{5}{25}i\] but you probably have to reduce the fractions

Answer 2

ohhh I always forget about that step! thank you so much

Answer 3

is it \[\frac{20-5i}{25}=\frac{20}{25}-\frac{5}{25}i\] or \[\frac{20-15i}{25}=\frac{20}{25}-\frac{15}{25}i\]

Answer 4

maybe the second one because you have to distribute the 5 when you multiply

Answer 5

15 whoops

Answer 6

so 4/5 - 3i/5 thanks so much for the help

Answer 7

you're welcome