812-x:11=46

=> x:11=766

=> x=8426

Vậy x=8426

8426 nha bạn

\(812-x:11=46\)

\(x:11=812-46\)

\(x:11=766\)

\(x=766x11\)

\(x=8426\)

Vậy x=8426

812 - x : 11 = 46

812 - x        = 46 x 11

812 - x        = 506

         x        = 812 - 506

         x        = 306

ta có 46x11=506 vậy là X : 11=506                                                                                                                                                     X là:812-506=306

812 - X = 46 x 11

812 - X = 506

X          = 812 - 506

X          = 306

xin cậu đấy tk mình đi

ko bik

x /  11=812-46=766

x=766 x 11 =8426

a: \(3^2\cdot\frac{1}{243}\cdot81^2\cdot\frac{1}{3^2}\)

\(=\frac{3^2}{3^5}\cdot\frac{3^8}{3^2}=\frac{1}{3^3}\cdot3^6=3^3=27\)

b: \(4^6\cdot256^2\cdot2^4=\left(2^2\right)^6\cdot\left(2^8\right)^2\cdot2^4\)

\(=2^{12}\cdot2^{16}\cdot2^4=2^{12}\cdot2^{20}=2^{32}\)

c: \(4^6\cdot9^5+6^9\cdot120\)

\(=2^{12}\cdot3^{10}+2^9\cdot3^9\cdot2^3\cdot3\cdot5\)

\(=2^{12}\cdot3^{10}+2^{12}\cdot3^{10}\cdot5\)

\(=2^{12}\cdot3^{10}\cdot6=2^{13}\cdot3^{11}\)

Ta có \(8^4\cdot3^{12}-6^{11}\)

\(=2^{12}\cdot3^{12}-2^{11}\cdot3^{11}\)

\(=2^{11}\cdot3^{11}\left(2\cdot3-1\right)=2^{11}\cdot3^{11}\cdot5\)

Ta có: \(A=\frac{4^6\cdot9^5+6^9\cdot120}{8^4\cdot3^{12}-6^{11}}\)

\(=\frac{2^{13}\cdot3^{11}}{2^{11}\cdot3^{11}\cdot5}=\frac{2^2}{5}=\frac45\)

d: \(4^2\cdot25^2+32\cdot125\)

\(=2^4\cdot5^4+2^5\cdot5^3\)

\(=2^4\cdot5^3\left(5+2\right)=2^4\cdot5^3\cdot7\)

\(B=\frac{4^2\cdot25^2+32\cdot125}{2^3\cdot5^2}\)

\(=\frac{2^4\cdot5^3\cdot7}{2^3\cdot5^2}=2\cdot5\cdot7=70\)

a) =(-4).(-25).125.(-8).(-11)

     = 100.(-1000).(-11) 

     = (-100000).(-11)

      = 1100000

b) =(-823)+823 . 812-812.823

    =(-823)+(823.812-812.823)

    = (-823) +0

    =-823

  k giùm mình nha!

  Hok tốt!

a) ( -4)×125×(-25)×(-11)×(-8)

 = [ -4 x ( -25 ) ] x ( -8 x 125 ) x ( -11 )

= 100 x ( -1000) x ( -11 )

= 1100000

b) (-823)× ( 1-812)-812×823

 = 823 ( 812-1) - 812 x 823

= (823 x 812 - 812 x 823) - 823

= -823

812x5+812x7-812x2

=812x(5+7-2)

=812x10

=8120

   812 x 5 + 812 x 7 - 812 x 2

= 812 x ( 5 + 7 - 2 )

= 812 x  10

= 8120

Chúc bn hok tốt !

Bài 1:

a. 

$-12-(-46)=-12+46=46-12=34$

b.

$-(-8)-54=8-54=-(54-8)=-46$

c.

$-15-(-72)=-15+72=72-15=57$

Bài 2:

a. $(156-812)-(156-12)=156-812-156+12$

$=(156-156)-(812-12)=0-800=-800$

b.

$-(-72+83)-(72+17)=72-83-72-17=(72-72)-(83+17)$

$=0-100=-100$

c.

$-(-23-78)+(77-178)=23+78+77-178$

$=(23+77)-(178-78)=100-100=0$

d.

$(-213-156)-(-213+44)=-213-156+213-44=(-213+213)-(156+44)$

$=0-200=-200$

Chọn C