Question

Làm tính nhân:

(3x^3 - 1/2x^2 + 1/5xy)×6xy^3

Answer 1

\(\left(3x^3-\frac{1}{2}x^2+\frac{1}{5}xy\right).6xy^3\)

\(=18x^4y^3-3x^3y^3+\frac{6}{5}x^2y^4\)

Answer 2

\(\left(3x^3-\frac{1}{2}x^2+\frac{1}{5}xy\right).6xy^3\)

\(=3x^3.6xy^3-\frac{1}{2}x^2.6xy^3+\frac{1}{5}xy.6xy^3\)

\(=18x^4y^3-3x^3y^3+\frac{6}{5}x^2y^4.\)

Chúc bạn học tốt!