TA có:\(-4^3\cdot71+32\cdot29-13\cdot\left(-32\right)\)

\(=-64\cdot71+32\cdot29+13\cdot32\)

\(=-32\cdot142+32\left(29+13\right)\)

\(=-32\cdot142+32\cdot42=-32\cdot100=-3200\)

-4³. 71+ 32 . 29 - 13. (- 32)=-3200

-64.71+32.29-13.(-32)

=(71+29).(64-13).32-(-32)

=100.51.0

=5100.0

=0

Tính nhanh giúp mik nhé

a: =-64x71+32x42

=-64x50=-3200

x+32/11 + x+23/12 = x+38/13 + x+27/14

\(\Rightarrow\frac{x+32}{11}-3+\frac{x+23}{12}-2=\frac{x+38}{13}-3+\frac{x+27}{14}-2\)

\(\Rightarrow\frac{x-1}{11}+\frac{x-1}{12}=\frac{x-1}{13}+\frac{x-1}{14}\)

\(\Rightarrow\frac{x-1}{11}+\frac{x-1}{12}-\frac{x-1}{13}-\frac{x-1}{14}=0\)

\(\Rightarrow\left(x-1\right)\left(\frac{1}{11}+\frac{1}{12}-\frac{1}{13}-\frac{1}{14}\right)=0\)

\(\Rightarrow x-1=0\).Do \(\frac{1}{11}+\frac{1}{12}-\frac{1}{13}-\frac{1}{14}\ne0\)

\(\Rightarrow x=1\)

\(2^{14}:2^{10}-3x+3^2=4^3-\left(-5\right)\\ 2^2-3x+9=64-\left(-5\right)\\ 4-3x+9=69\\ 4-3x=69-9\\ 4-3x=60\\ 3x=4-60\\ 3x=-56\\ x=-56;3\\ x=\dfrac{-56}{3}\)

tìm x \(\in\) Z  biết :             

2¹⁴ :  2¹⁰ - 3x + 3² = 4³ -(-5)

       2⁴  - 3x   + 9   = 64 + 5

      16 + 9 - 3x      = 69

         25 - 3x         =  69

                 3x        = 25 - 69

                 3x        = - 44

                  x        = - \(\dfrac{44}{3}\)  (loại vì x \(\in\) Z)

     Kết luận : x \(\in\) \(\varnothing\)

=5*[55+13+32]

=5*100                     [* là dấu nhân]

=500

5x55+13x5+32

=5x(55+13+32)

=5x100

=500

   32 x 17 x 2 + 16 x 23 x 4 + 64 x 50

= ( 32 x 17 x 2 ) + ( 16 x 23 x 4 ) + ( 64 x 50 )

=  1088 + 1472 + 3200

=   5760

=(32.2).17+(16.4).23+64.50

=64.17+64.23+64.50

=64.(17+23+50)

=64.90

=5760

x = 7 , y = 5

ta có :xy-2x+3y=13

         xy+3y-2x=13

         y(x+3)-2x=13

         y(x+3)-2x+6-6=13

         y(x+3)-2(x+3)-6=13

         (x+3)(y-2)=13+6=19

\(\Rightarrow\left(x+3\right)\left(y-2\right)\inƯ\left(19\right)\)\(=\left(-19;19;1;-1\right)\)

A = ( - 5)^32 . 20^43 / ( -8 )^29 . 125^25

   = 5^32 . 20^43 / ( -8 )^29 . 125^25

   = 5^32 . 20^43 / ( -8 )^29 . ( 5^3 )^25

   = 5^32 . 20^43 / ( -8 )^29 . 5^75

   = 20^43 / ( -8 )^29 . 5^43

   = ( 4 . 5 )^43 / ( -8 )^29 . 5^43

   = 4^43 . 5^43 / ( -8 )^29 . 5^43

   = 4^43 / ( -8 )^29

   = ( 2^2 )^43 / ( -2^3 )^29

   = 2^86 / -2^87

AI GIÚP MÒNH VỚI !