11*1=11 nha bn

bao thang la bao ko cong bao ko cong la bong ko cao bong ko cao la bong lun bong lun la bun long

\(x^3-2x^2-2x+3=0\)

\(\Leftrightarrow x^3-x^2-x^2+x-3x+3=0\)

\(\Leftrightarrow x^2\left(x-1\right)-x\left(x-1\right)-3\left(x-1\right)=0\)

\(\Leftrightarrow\left(x^2-x-3\right)\left(x-1\right)=0\)

...

27 . 39 + 27 . 63 - 2 . 27

= 27 . ( 39 + 63 - 2 )

= 27 . 100 

= 2700