Question

phân tích đa thức thành nhân tử

ab³c² - a²b²c² - ab²c³ + a²bc³

Answer 1

\(ab^3c^2-a^2b^2c^2-ab^2c^3+a^2bc^3=abc^2\left(b^2-ab-bc+ac\right)=abc^2\left(b-a\right)\left(b-c\right)\)

Answer 2

\(ab^3c^2-a^2b^2c^2-ab^2c^3+a^2bc^3\\ =abc^2\left(b^2-ab-bc+ac\right)\\ =abc^2\left[b\left(b-a\right)-c\left(b-a\right)\right]\\ =abc^2\left(b-a\right)\left(b-c\right)\)