Question

Thực hiện phép tính : (x-3)³ phần 3x² : x² - 6x+9 phần 6x 

Answer 1

\(\frac{\left(x-3\right)^3}{3x^2}:\frac{x^2-6x+9}{6x}\)

\(=\frac{\left(x-3\right)^3}{3x^2}.\frac{6x}{\left(x-3\right)^2}\)

\(=\frac{2\left(x-3\right)}{x}\)

\(=\frac{2x-6}{x}\)

#H

Answer 2

Trả lời:

\(\frac{\left(x-3\right)^3}{3x^2}:\frac{x^2-6x+9}{6x}\)

\(=\frac{\left(x-3\right)^3}{3x^2}.\frac{6x}{x^2-6x+9}\)

\(=\frac{\left(x-3\right)^3}{3x^2}.\frac{6x}{\left(x-3\right)^2}\)

\(=\frac{\left(x-3\right)^3.6x}{3x^2.\left(x-3\right)^2}\)

\(=\frac{2\left(x-3\right)}{x}\)