jimmmmmmmmmmmmmmmmmmmmmmmmmmm

he he he he he he

Bài 5: 

a: BC=10cm

b: HA=4,8cm

HB=3,6(cm)

HC=6,4(cm)

Bạn ơi, làm như vậy thì quá ngắn rồi ạ, với lại bạn làm thiếu mất đề bài của mình rồi 

23.17-23.14

=23.(17-14)

=23.3 = 69

23.(17-14)=23.3=69

mình làm những bài bn chưa lm nhé

9B

10A

bài 2

have repainted

bàii 3

ride - walikking

swimming

watch

Dù sao cũng cảm ơn bạn 🥰

B D C D D D D C A C

Thanks nhiều ạ🙆‍♀️❤

1c  2.a  3b  4a

Còn bài II nữa ạ , bạn giúp mình nốt nhá 

1 Travelling by plane is different from travelling by train

2 Jane's car is as nice as Kate's car

3 Fruit juice is good for your health and so is tea

4 Tim has the same weight as Hung

5 This picture is beautiful but it is so expensive

Bài 10

1 I do => do I

2 but => and

3 more best => better

4 do => does

5 neither => either

Cảm ơn nhiều ạ 🥰

Bài 3: 

a:Ta có: \(\left|x+\dfrac{3}{4}\right|-\dfrac{1}{2}=0\)

\(\Leftrightarrow\left|x+\dfrac{3}{4}\right|=\dfrac{1}{2}\)

\(\Leftrightarrow\left[{}\begin{matrix}x+\dfrac{3}{4}=-\dfrac{1}{2}\\x+\dfrac{3}{4}=\dfrac{1}{2}\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{-5}{4}\\x=-\dfrac{1}{4}\end{matrix}\right.\)

b: Ta có: \(23-\left(2x+3\right)^2=-2\)

\(\Leftrightarrow\left(2x+3\right)^2=25\)

\(\Leftrightarrow\left[{}\begin{matrix}2x+3=5\\2x+3=-5\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}2x=2\\2x=-8\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=1\\x=-4\end{matrix}\right.\)

Bài 2: 

a: Ta có: \(\left(x-2\right)\left(x+3\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}x=2\\x=-3\end{matrix}\right.\)

b: Ta có: \(x^3+4x=0\)

\(\Leftrightarrow x\left(x^2+4\right)=0\)

hay x=0