Give the correct form of the word given to complete the sentence:
1. Young children are expected to show ........... to their parents. ( obey)
2. When cycling on the roads , remember : ............ first .( safe)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Ta có: \(VP\ge0\forall x\)
\(\Rightarrow42-3\left|y-3\right|\ge0\forall y\)
\(\Rightarrow3\left|y-3\right|\le42\)
\(\Rightarrow0\le\left|y-3\right|\le14\)(1)
Mà dễ thấy 42 chẵn, \(4\left(2012-x\right)^4\)chẵn nên \(3\left|y-3\right|\)chẵn
\(\Rightarrow y-3\)chẵn (2)
Từ (1) và (2) suy ra \(\left|y-3\right|\in\left\{2;4;6;8;10;12;14\right\}\)
Mà \(42-3\left|y-3\right|⋮4\)
nên \(\left|y-3\right|\in\left\{2;6;10;14\right\}\)
Thử từng trường hợp ta chỉ thấy \(\left|y-3\right|=14\)thỏa mãn hay \(y\in\left\{17;-11\right\}\)
Lúc đó \(4\left(2012-x\right)^4=0\Rightarrow x=2012\)
\(\frac{\left(x+1\right)}{1,5}=\frac{3}{2\left(x+1\right)}\)
\(\Leftrightarrow\left(x+1\right).2\left(x+1\right)=1,5.3\)
\(\Leftrightarrow\left(x+1\right).2x+2=\frac{9}{2}\)
\(\Leftrightarrow\orbr{\begin{cases}x+1=\frac{9}{2}\\2x+2=\frac{9}{2}\end{cases}\Leftrightarrow\orbr{\begin{cases}x=\frac{7}{2}\\2x=\frac{5}{2}\end{cases}\Leftrightarrow}\orbr{\begin{cases}x=\frac{7}{2}\\x=\frac{5}{4}\end{cases}}}\)
\(\frac{x+1}{1,5}=\frac{3}{2\left(x+1\right)}\)
\(\Rightarrow2\left(x+1\right)^2=4,5\)
\(\Rightarrow\left(x+1\right)^2=\frac{9}{4}\)
\(\Rightarrow\orbr{\begin{cases}x+1=\sqrt{\frac{9}{4}}\\x+1=-\sqrt{\frac{9}{4}}\end{cases}}\Rightarrow\orbr{\begin{cases}x=\frac{1}{2}\\x=-\frac{5}{2}\end{cases}}\)
obey
safety
1. Young children are expected to show ......obey..... to their parents. ( obey)
2. When cycling on the roads , remember : ......safety...... first .( safe)
#
M