Question

solve (3+2i)(2+5i)

Answer 1

(3+2i)(2+5i)


3*2 + 3*5i + 2i*2 + 2i*5i


6 + 15i + 4i + 10i^2


6 + 15i + 4i + 10(-1)


6 + 15i + 4i - 10


-4 + 19i



So (3+2i)(2+5i) = -4 + 19i