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Trang 124 đến 125 nha

trong sbt lớp 6 đó bn

Where are you going now?

I am going to the post office.

What are the student doing in the class now?

They are talking.

Is he doing his homework now?

Anh hải đi ngủ hay sao mà chẳng giúp mk , 😅

Bùn ghê

1 My parents go shopping twice a week

2 Hoa's house has a balcony

3 My brother usually plays badminton with his friends

4 My favorite book is Tam and Cam. What is yours?

5 There are 10 pencil cases on the table

1, My parents go shopping twice a week.

2, Hoa's house has a balcony.

3, My brother usually plays badminton with his friends.

4, My favorite book is Tam and Cam. What's yours?

5, There are ten pencil cases on the table.

\(3,\\ a,\dfrac{\left(1+\sqrt{x}\right)^2-4\sqrt{x}}{1-\sqrt{x}}\\ =\dfrac{\sqrt{x}-2\sqrt{x}+1}{1-\sqrt{x}}=\dfrac{\left(1-\sqrt{x}\right)^2}{1-\sqrt{x}}=1-\sqrt{x}=1-\sqrt{2}\)

\(b,\dfrac{\left(\sqrt{x}-\sqrt{y}\right)^2+4\sqrt{xy}}{1+\sqrt{xy}}\\ =\dfrac{x+2\sqrt{xy}+y}{1+\sqrt{xy}}=\dfrac{\left(\sqrt{x}+\sqrt{y}\right)^2}{1+\sqrt{xy}}\\ =\dfrac{\left(\sqrt{2}+\sqrt{3}\right)^2}{1+\sqrt{6}}=\dfrac{5+2\sqrt{6}}{1+\sqrt{6}}\\ =\dfrac{\left(5+2\sqrt{6}\right)\left(\sqrt{6}-1\right)}{5}\\ =\dfrac{3\sqrt{6}+7}{5}\)

Tác dụng: Làm sáng bóng đèn

Dụng cụ: Bóng đèn, Pin, Công tắc

~ Chúc em học tốt! ~

Bai lam

\(3^{x+1}=9^x\Leftrightarrow3^{x+1}=3^{2x}\)

\(\Leftrightarrow x-1=2x\Leftrightarrow-x-1=0\Leftrightarrow x=-1\)

(35.5-2.5):x=15

33            :x=15

                x=33:15

                 x=2.2

35,5 : x - 2,5 : x = 15

(35,5-2,5) : x = 15

33 : x = 15

x = 33 : 15

x = \(\frac{33}{15}\)

35,5 : x - 2,5 : x = 15

( 35,5 - 2,5 ) : x = 15

33 : x = 15

       x = 33 : 15

       x = 2,2