Please help i need to know how to do it, plz tell me how you get it

(4-i)(6-6i)

18-30i is the awnser

Step-by-step explanation:

( 4 - i ) ( 6 - 6i )

= 4 ( 6 - 6i ) - i ( 6 - 6i )

= 24 - 24i - 6i + 6 ( i )^2

= 24 - 30i + 6 ( - 1 )

= 24 - 30i - 6

= 24 - 6 - 30i

= 18 - 30i

Note : -

" i " is a complex number.The value of " i " is √(-1). The value of i^2 is - 1.When a negative complex number gets multiplied by a negative complex number, it gives negative number. For Example: - i ( - bi ) = bi^2 = - bWhen a negative complex number gets multiplied by a positive number, it gives a negative complex number. For Example: - i ( 6 ) = - 6i.

Okay i will add you