4x4=16

3x3=9

2x2=4

1x1=1

0x0=0

Hok tốt

16

9

4

1

0

\(2\cdot2=2^2=4\)

\(3\cdot3=3^2=9\)

\(4\cdot4=4^2=16\)

\(5\cdot5=5^2=25\)

2 x 2 = 4 

3 x 3 = 9

4 x 4 = 16

5 x 5 = 25

mik cần gấp giúp mik nha

giúp mik đi mà

c: =>2/3x=1/10+1/2=1/10+5/10=6/10=3/5

hay \(x=\dfrac{3}{5}:\dfrac{2}{3}=\dfrac{9}{10}\)

d: \(\Leftrightarrow\dfrac{4}{9}:x=\dfrac{2}{3}-\dfrac{3}{5}=\dfrac{1}{15}\)

hay \(x=\dfrac{4}{9}:\dfrac{1}{15}=\dfrac{4}{9}\cdot15=\dfrac{20}{3}\)

f: (x+1/2)(2/3-2x)=0

=>x+1/2=0 hoặc 2/3-2x=0

=>x=-1/2 hoặc x=1/3

a. ​3/5 . 15/7 - 15/7 . 8/5

= 15/7(3/5-8/5)

=15/7.  -\(\frac{1}{1}\)

=22/7

b. 4/5 . 1 3/7 + 4/5 . 4/7

=4/5(13/7+4/7)

=4/5.17/7

= 68/35

\(A,1,1+\frac{2}{3}+0,75+\frac{5}{8}\)

\(=\frac{11}{10}+\frac{2}{3}+\frac{3}{4}+\frac{5}{8}\)

\(=\frac{11}{10}+\frac{2}{3}+\frac{11}{8}\)

\(=\frac{53}{30}+\frac{11}{8}\)

\(=\frac{377}{120}\)

\(b,\frac{5}{11}+\frac{6}{11}:\frac{13}{22}+\frac{7}{3}-\frac{1}{2}\)

\(=\frac{5}{11}+\frac{6}{11}.\frac{22}{13}+\frac{7}{3}-\frac{1}{2}\)

\(=\frac{5}{11}+\frac{12}{13}+\frac{7}{3}-\frac{1}{2}\)

\(=\frac{197}{143}+\frac{7}{3}-\frac{1}{2}\)

\(=\frac{1592}{429}-\frac{1}{2}\)

\(=\frac{2755}{858}\)

1+1=2

2+2=4

3+3=6

~~~~HỌC TỐT NHÉ BẠN~~~~

\(1+1=2\)

\(2+2=2^2=4\)

\(3+3=6\)

Chúc bn hok tốt!

M.N làm 1 bài thôi cũng được(1 tk)

Làm 2 bài 3 tk nha !

Tk lại mk với nha !

1+x=2

   x=2-1

   x=1

1.2.3.4.5.6.7.8.9.0=0

Tk mk nhé !

1)Tìm x, biết:

1+x=2

x=2-1

x=1

vậy ....

23:x=1

x=23:1

x=23

Vậy...

15.x:6=10

15.x=60

x=60:15

x=4

Vậy...

2)Tính nhanh biểu thức sau:

1+2+3+4+5+6+7+8+9=(1+9)+(2+8)+(7+3)+(6+4)+5

                                  =10+10+10+10+5

                                 =10.4+5

                                  =40+5=45

1.2.3.4.5.6.7.8.9.0=0