Respuesta :

Answer:

( 3 -  7i) • ( 2 -  5i) = ( -  29 -  29i)

Step-by-step explanation:

The formula is :

(a+bi) • (x+yi)  = ax+by•i^2+(ay+bx)i

and since  i^2 = -1  it can be written as :

ax - by + (ay + bx) i

( 3 -  7i) • ( 2 -  5i) =

 ( -  29 -  29i)

Answer:

—29 - —29i

Step-by-step explanation: