Bonsoir;
A= 7-(8×+2)
= 7-8x-2
= -8x +5
B=-(-4+3×)+×
=4 -3x +x
= 4-2x
C=-(-3×+4)+(3×-1)=
= 3x -4 +3x -1
= 6x -5
D= 6×+(-4×+3)-(×+4)-2=
= 6x-4x +3 -x-4-2
= x -3
E= 2(-×+3)+(3×-5)=
= -2x +6 +3x -5
= x +1
F=5(2×+1)-5×(×-4)=
= 10x +5 -5x² +20x
= -5x² +30x +5