\(d,100:\left\{250:\left[450-\left(4.53-22.25\right)\right]\right\}\)

\(100:\left\{250:\left[450-\left(4.5^3-3^2.25\right)\right]\right\}\)

\(100:\left\{250:\left[450-175\right]\right\}\)

\(100:\left\{250:275\right\}\)

\(=100:\dfrac{10}{7}\)

\(=100.\dfrac{7}{10}\)

\(=70\)

bài này của bạn làm sai rồi.kết quả là 20

\(=100:\left[250-450+4\cdot125-8\cdot25\right]\\ =100:\left[-250+500-200\right]=100:50=2\)

a, 36:{336:[200–(12+8.20)]}

= 36:{336:[200–(12+160)]}

= 36:{336:[200–172]}

= 36:{336:28}

= 36:12 = 3

b, {145–[130–(246–236)]:2}.5

= {145–[130–10:2]}.5

= {145–130}.5

= 20.5 = 100

c, 100:{250:[450–(4. 5 3 – 2 2 .25]}

= 100:{250:[450–400]}

= 100:{250:50}

= 100:5 = 20

d, 798+100:[16–2.( 5 2 –22)]

= 798+100:10

= 798+10 = 808

e, (6954+1525:5+47.19).(29–58.2)

= (6954+1525:5+47.19).0 = 0

f,  2 4 .157– 2 4 .58+16

= 16.(157–58+1) = 1600

Đáp Án

a)52:4x3+2x52

=13x3+2x52

=39+104

=143

b)5x42-18:32

=100-0.5625

=99.4375

của bạn nha

gíup em vs ạ

a. 525

b. 

a. -82

b. 15

\(100\div\left\{250\div\left[450-\left(4\times5^2-2^2\times25\right)\right]\right\}\)

\(=100\div\left\{250\div\left[450-\left(4\times25-4\times25\right)\right]\right\}\)

\(=100\div\left\{250\div\left[450-0\right]\right\}\)

\(=100\div\frac{250}{450}=100\times\frac{450}{250}=180\)

100 : { 250 : [ 450 - ( 4 . 5² - 2² . 25 ) ] }

= 100 : { 250 : [ 450 - ( 4 . 25 - 4 . 25 ) ] }

= 100 : { 250 : [ 450 - 0 ] }

= 100 : { 250 : 450 }

= 100 : \(\frac{5}{9}\)

= 180

Hok tốt