giải hpt:
a) \(\left\{{}\begin{matrix}4x+9y=6\\3x^2+6xy-x+3y=0\end{matrix}\right.\)
b) \(\left\{{}\begin{matrix}\left(x+y+2\right)\left(2x+2y-1\right)=0\\3x^2-32y^2+5=0\end{matrix}\right.\)
c) \(\left\{{}\begin{matrix}2x^2-xy+3y^2=7x+12y-1\\x-y+1=0\end{matrix}\right.\)
I. choose the word which is stressed differently from the rest.
1. A. channel B. career C. cartoon D. together
2. A. beautiful B. television C. internet D. interfere
II. choose the word which has the underlined letters pronounced differently from the others
1. A. repeat B. report C. determine D. together
2. A. instead B. seat C. cheap D. please
như này mới đúng nha!