Question

mim ajudem a montar essas conta. 2x4-4x3+5-4x3-(3x4+4x3-3x+2)-3x2

Answer 1

8-12+5-12(12+12+3x+2)-6
-11(26+3x)-6
-11+26+3x-6
=9+3x
??

Answer 2

2x4-4x3+5-4x3-(3x4+4x3-3x+2)-3x2=
8-12+5-12-(12+12-3x+2)-6=
8-12+5-12-12-12+3x-2-6=
-45+3x=
3(x-15)