4.(x+3)
4.(x-3)
4.(5-x)
-2.(5-x)
-2.(5+x)
4x+12
4x-12
20-4x
-10+2x
-10-2x
4.(x+3) => 4x+12
4.(x-3) => 4x-12
4.(5-x) => 20-4x
-2.(5-x) =>-10+2x
-2.(5+x) =>-10-2x
