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2/ household
3/ activity
4/ medical
5/ neighborhood
6/ addictive
còn lại ko nhìn dc
interesting
household
activities
medical
neighbourhood
?
?
inventor
useful
?
C1
A. baseball - football - volleyball - basketball - ice hockey
B. judo - gymnastics
C. skiing - ice-skating - horse-riding
1 What were Tim and Matt do when you saw them?
2 Were you swimming
3 What was he doing?
4 he was just trying
5 Were they laughing?
6 Was Matt making
7 Was he watching
8 Were you wearing
\(M=x^4-4x+7=\left(x^2-4x+4\right)+3=\left(x-2\right)^2+3\ge3\)
\(minM=3\Leftrightarrow x=2\)
\(P=x^2-6x+y^2-2y+12=\left(x^2-6x+9\right)+\left(y^2-2y+1\right)+2=\left(x-3\right)^2+\left(y-1\right)^2+2\ge2\)
\(minP=2\Leftrightarrow\)\(\left\{{}\begin{matrix}x=3\\y=1\end{matrix}\right.\)
inventor
useful
less
Ok