Question

a- (3xy). (-5x²). (-y)
b- (-2a²bc). (9ab³c). (abc)

Answer 1

a) (3xu) . (-5x^2) . (-y)
>>(- 15 x^3y ). (-y)
>> 15 x^3y^2

b) (-2a^2bc) . (9ab^3c) . (abc)
>>(- 18a^3b^4c^2) . (abc)
>> - 18a^4b^5c^3