Question

Simplify (6ab^3c)(-abc^2).

Answer 1

-6a^2b^4c^3

Answer 2

-6a^2b^4c^3

Answer 3

see the terms in first bracket can be written as 6 * a * b^3 * c
the term in second bracket can be written as -1 * a * b * c^2

so their product = 6 * a * b^3 * c * -1 * a * b * c^2
= 6 * -1 * a * a * b^3 * b * c * c^2
= -6 * a^2 * b^4 * c^3
= -6a^2b^4c^3