=1728 nha

12x12x12=1728 nhé.

= 1728

  12 .2 + 12.8 + 12.52 + 12.38

=12. ( 2 + 8 + 52 + 38)

=12.100

=1200

=37x52+12.38

=1924+12.38

=1936.38

1936.38

12 + 12 

= 24

ủng hộ mk nhé kb mk đi

12+12=24

12+12=24

x+12=45

x=45-12

x=33

x+12=45

x      =45-12

x       =33

X =33 NHA  ZzZ Thiên Hương ZzZ ! ! !

12 - 12 + 12 = 12 nha

12 - 12 + 12 = 12

12 bn nha

tk mk đi mk tk lại

1 : 1 x 345 - 13 + 12%

= 1 x 345 - 13 + 0,12

= 345 - 13,12

= 331,88

tk nha

 1:1*345-13+12%

=345-13+0.012

=332+0.012

=332.012

1 :1x 345 - 13 + 12 %

= 1 x 345 - 13 + 0.12

=      345  -13 +0.12

=         332+0.12

=            332.12 

k mk nha

\(\frac{7}{12}-0,75:\left(4x-3\right)^2=\frac{-3}{2}\)

\(\frac{3}{4}:\left(4x-3\right)^2=\frac{25}{12}\)

\(\left(4x-3\right)^2=\frac{9}{25}=\left(\frac{\pm3}{5}\right)^2\)

+) 4x - 3 = 3/5

4x = 18/5

x = 9/10

+) 4x - 3 = -3/5

4x = 12/5

x = 3/5

Vậy,.........

\(\frac{7}{12}-0,75:\left(4x-3\right)^2=-\frac{3}{2}\)

\(\Leftrightarrow\frac{7}{12}.12\left(4x-3\right)^2-\frac{0,75}{\left(4x-3\right)^2}.12\left(4x-3\right)^2=-\frac{3}{2}.12\left(4x-3\right)^2\)

\(\Leftrightarrow7\left(4x-3\right)^2-9=-18\left(4x-3\right)^2\)

\(\Rightarrow\orbr{\begin{cases}x=\frac{9}{10}\\x=\frac{3}{5}\end{cases}}\)

\(\frac{7}{12}-0,75:\left(4x-3\right)^2=\frac{-3}{2}\)

\(0,75:\left(4x-3\right)^2=\frac{7}{12}-\frac{-3}{2}\)

\(0,75:\left(4x-3\right)=\frac{7+18}{12}\)

\(0,75:\left(4x-3\right)=\frac{25}{12}\)

\(\frac{3}{4}:\left(4x-3\right)=\frac{25}{12}\)

\(4x-3=\frac{3}{4}:\frac{25}{12}\)

\(4x-3=\frac{3.12}{4.25}=\frac{9}{25}\)

\(4x=\frac{9}{25}+3\)

\(4x=\frac{9+75}{25}\)

\(4x=\frac{84}{25}\)

\(x=\frac{84}{25}:4\)

\(x=\frac{84.1}{25.4}\)

\(x=\frac{21}{25}\)

Vậy \(x=\frac{21}{25}\)

12+12=24

13+13=26

14+14=28

15+15=30

12  + 12 = 12  x 2 = 24 

13 + 13 = 13 x 2 = 26 

14 + 14 = 14 x 2 = 28 

15 + 15 = 15 x 2 = 30 

^^ Học tốt nhé! 

12+12=24

13+13=26

14+14=28

15+15=30

K mink nhé!