Answer:
Step-by-step explanation:
hello :
(7-2i)/(4 +3i)
=(7-2i)×(4-3i)/(4 +3i)×(4-3i)
but : (7-2i)×(4-3i) =28-21i-8i+6i²
(7-2i)×(4-3i) = 22-29i ....i² = -1
(4 +3i)×(4-3i) = 4²-(3i)²...(identity)
= 16+9 =25
so :
(7-2i)×(4-3i)/(4 +3i)×(4-3i)
=(22-29i)/25
(7-2i)/(4 +3i) = 22/25 -29/25i
(form : a+ib)
