Question

100 POINT REWARD!! PLS HELP ASAP!!
Drag the tiles to the correct boxes to complete the pairs.
Given that x = 4 + 5i and y = 2 - 9i, match the equivalent expressions.

1. 53 - 26i
2. 106 - 52i
3. 2 - 32i
4. 14 + 29i

Tiles :

2x (y)

-x + 3y

x (y)

4x - y

Answer 1

real part of x(y)=4*2-(-9*5)=53 so 1 is x(y): real part of x(y)=

real part of 2x(y)=2*53=106 so 2 is 2x(y)

real part of -x+3y=-4+6=2 so 3 is -x + 3y

real part of 4x-y=16-2=14 so 4 is 4x - y

Answer 2

1. 53 - 26i =  x(y) cuz' real xy=4*2+9*5=53

2. 106 - 52i = 2x(y) cuz real 2xy=2*53=106

3. 2 - 32i = -x + 3y cuz real -x+3y=-4+3*2=6

4. 14 + 29i = 4x - y cuz real 4x-y=4*4-2=14