Question

if (4+3i)(1+4i)= x+iy , find x and y​

Answer 1

Answer:

x = - 8 and y = 19

Step-by-step explanation:

(a + b)(c + d) = ac + ad + bc + bd

(4 + 3i)(1 + 4i) = x + iy

(4 + 3i)(1 + 4i) = 4 + 16i + 3i + 12(i)² = 4 + 19i + 12(- 1) = - 8 + 19i

x = - 8 and y = 19