Question

(x-2).(x+\(\dfrac{2}{3}\))

Answer 1

Thiếu đề hả bạn

Answer 2

Đề bài : Rút gọn

Ta có : ( x -2 ) . ( x + \(\dfrac{2}{3}\) )

= x² + \(\dfrac{2}{3}x\) - 2x + \(\dfrac{-4}{3}\)

= x²+ x.(\(\dfrac{2}{3}-2\) ) + \(\dfrac{-4}{3}\)

= x² + \(\dfrac{-4}{3}x\) + \(\dfrac{-4}{3}\)

= x² + x . ( 1 + x )

Answer 3

\(\left(x-2\right)\left(x+\dfrac{2}{3}\right)\)

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

\(=x^2+\dfrac{2}{3}x-2x-\dfrac{4}{3}\)

\(=x^2+\dfrac{-4}{3}x-\dfrac{4}{3}\)