Question

How do I solve this?

Answer 1

I would first make it 5+-2x and so then you would have I5+-2xI * IxI and then you have I5+ (-2*-4)I*I-4I then you have I5+8I*4 then you would have 13*4 and then your answer is 52 :)

Answer 2

|5 - 2x| · |x|
|5 - 2(-4)| · |-4|
|5 + 8| · 4
|13| · 4
13 · 4
52