Question 286171
4-5i/4+5i


(4-5i/4+5i)(4-5i/4-5i)



[(4-5i)(4-5i)]/[(4+5i)(4-5i)]



[16-40i+25i^2]/[16-25i^2]



(-9-40i)/41



-9/41-40/41i



Answer: 4-5i/4+5i = -9/41-40/41i