Пошаговое объяснение:
1.
1) = -2ab-b(-6с)-8b = -2ab+6bc-8b
2) =
3) =
4)=
2.
1) =(-9.5-8)=-1.5
2) =2.4*13.3=31.92
3)
Пошаговое объяснение:
1.
1) = -2ab-b(-6с)-8b = -2ab+6bc-8b
2) =
3) =
4)=
2.
1) =(-9.5-8)=-1.5
2) =2.4*13.3=31.92
3)