(324 x 6 + 4 x 324 ) : (162 x 2)

= 324 x (6+4) : 324

= 324 x 10 : 324

= (324:324) x 10

= 1 x 10 

= 10

\(\text{(324 x 6 + 4 x 324 ) : (162 x 2)}.\)

\(=\left[\left(6+4\right)\times324\right]:324.\\ =\left(10\times324\right):324.\\ =10.\)

( 324 x 6 + 4 x 324 ) : ( 162 x 2 )

= 324 x 6 + 4 x 324 : 324

= 324 x ( 6 + 4 ) : 324

= 324 x 10 : 324

= 3240 : 324

= 10

a) Ta có : (1/16)¹⁰ = [(1/2)⁴]¹⁰ = (1/2)⁴⁰

   Vì (1/2)⁴⁰ < (1/2)⁵⁰ nên (1/16)¹⁰ < (1/2)⁵⁰

b)  Ta có : 4³⁰ = ( 2 . 2)³⁰ = 2³⁰ . 2³⁰ = (2²)¹⁵ . (2³)¹⁰ > 3¹⁵ . 8¹⁰ > 3 . 3¹⁰ .8¹⁰ = 3 . (3 . 8)¹⁰ = 3 .24¹⁰

  Vậy nên 2³⁰ + 3³⁰ + 4³⁰ > 24¹⁰ . 3

Mình chỉ giải thế thôi, còn đâu bn tự làm tiếp

Cảm ơn bạn sakura rấttttt nhìuuuuuuuu!

3 x 15 + 21 x 15 + 85 x 5

= 45 + 315 + 425

= 785

15 - 30 + 40 

= 25

21 + 19 - 50 + 10

= 0

\(\dfrac{1}{5}-\dfrac{1}{4}+2\)

\(=-\dfrac{1}{20}+2\)

\(=\dfrac{39}{20}\)

\(\left(\dfrac{1}{4}+\dfrac{1}{6}\right)\times\left(\dfrac{1}{2}-\dfrac{1}{4}\right)\)

\(=\dfrac{5}{12}\times\dfrac{1}{4}\)

\(=\dfrac{5}{12}\times\dfrac{3}{12}\)

\(=\dfrac{5}{48}\)

\(\dfrac{1}{10}+\dfrac{1}{5}-\dfrac{3}{4}\)

\(=-\dfrac{9}{20}\)

\(3\times15+21\times15+85\times5\\ =15\times\left(3+21\right)+425\\ =15\times24+425\\ =360+425\\ =785\)

\(15-30+40\\ =\left(15+40\right)-30\\ =55-30\\ =25\)

\(21+19-50+10\\ =\left(21+19\right)-\left(50-10\right)\\ =40-40\\ =0\)

\(\dfrac{1}{5}-\dfrac{1}{4}+2\)

\(=\dfrac{4}{20}-\dfrac{5}{20}+\dfrac{40}{20}\)

\(=\dfrac{\left(4+40\right)}{20}-\dfrac{5}{20}\)

\(=\dfrac{44}{20}-\dfrac{5}{20}\)

\(=\dfrac{39}{20}\)

\(\left(\dfrac{1}{4}+\dfrac{1}{6}\right)\times\left(\dfrac{1}{2}-\dfrac{1}{4}\right)\)

\(=\dfrac{5}{12}\times\dfrac{1}{4}\)

\(=\dfrac{5}{48}\)

\(\dfrac{1}{10}+\dfrac{1}{5}-\dfrac{3}{4}\)

\(=\dfrac{2}{20}+\dfrac{4}{20}-\dfrac{15}{20}\)

\(=\dfrac{6}{20}-\dfrac{15}{20}\)

\(=-\dfrac{9}{20}\)

Help meeeeeeeeeee

a) (-75) + 50 + (-30) + (-5) .

= [(-75)+(-30)]+[50+(-5)]

=-100+45

=-55

b) 15.(-2).(-5).(-6)

= [ 15.(-6)].[(-2).(-5)]

=-90.10

=-900.

x+10+(-5)=x+10-5=x=5.

a, 42x(54+17):71

=42x71:71=42

b, 123x(154-65):89

=123x89:89=123

c,324x(6+4):324

=324x10:324=10x324:324=10

\(a)\left(42\times54+17\times42\right):71\)

\(=42\times54+17\times42:71\)

\(=42\times\left(54+17\right):71\)

\(=42\times71:71\)

\(=42\)

\(b)\left(123\times154-65\times123\right):89\)

\(=123\times154-65\times123:89\)

\(=123\times\left(154-65\right):89\)

\(=123\times89:89\)

\(=123\)

\(c)\left(324\times6+4\times324\right):\left(162\times2\right)\)

\(=324\times6+4\times324:324\)

\(=324\times\left(6+4\right):324\)

\(=324\times10:324\)

\(=3240:324\)

\(=10\)

A) 

0,92 × 324 + 0,92 × 678

= 0,92 × (324+678) 

= 0,92 ×  1002

=  0,92 × 1000 + 0,92 × 2

=      920 + 1,84

= 921,84

a)       

b) 2.3^x=162

3^x=162:2

3^x=81

Mà 3⁴=81

Nên x= 4

c)2^x—15=17

2^x=17+15

2^x=32

Mà 2⁵=32

Nên x=5

trả lời cho hết, chớ 2 câu thì anh huỳnh trả lời làm chi hãy trả lời câu hỏi phải có tâm nhé bạn

Mình chỉ biết có thế thôi bạn thông cảm nhé

4 x 2 x 25 x 10 x 50 x 10 x 100

= ( 4 x 25 ) x ( 2 x 50 ) x 10 x 10 x 100

= 100 x 100 x 10 x 10 x 100

= 100 x 100 x 100 x 100

= 100000000 

4x2x25x10x50x10x100 = (4x25)x(50x2)x(10x10x100)

                                  = 100x100x10000 

                                  = 100000000

4 x 2 x 25 x 10 x 50 x 10 x 100

= ( 4 x 25 ) x ( 2 x 50 ) x ( 10 x 10 x 100 )

= ( 4 x 25 ) x ( 2 x 50 ) x ( 100 x 100 )

= 100 x 100 x 100 x 100

= 100000000