a) 3.5³ - 16 : 2² = 3 . 125 - 16 : 4 = 375 - 109 = 266.

b) 2448 : [119 : (23-6)] = 2448 : (119 : 17) = 2448 : 7 = 349,714...

a)156-4=152

b)42(39-37)]:42

=42.2:42

=2

c)2448:(119-17)

=2448:102

=24

a) 80 - (4.5² - 3.2³)

= 80 - 100 + 24

= 4

b) 23.75 + 25.23 + 180

= 25.(23.3 + 23) + 180

= 25.23.4 + 180

= 100.23 + 180

= 2300 + 180

= 2480

c) 2448 : [119 - (23 - 6)]

= 2448 : (119 - 17)

= 2448 : 102

= 24

a,80 - (100-24)

= 80-76

= 4

b,1725+575+180

=2300+180

=2480

c,2448 : [119-17]

=2448 : 102

= 24

mik mong bn sẽ làm đúng

Tính:

\(2448:\left[119-\left(23-6\right)\right]\)

\(=2448:\left[119-17\right]\)

\(=2448:102\)

\(=24\)

___________________________

\(\left\{789+\left[324:\left(78-66\right)\right]\right\}+273\)

\(=\left\{789+\left[324:12\right]\right\}+273\)

\(=\left\{789+27\right\}+273\)

\(=816+273\)

\(=1089\)

Chúc bạn học tốt

(3.5)^2-(16x2)^2=3^2x5^2-16^2x2^2=9x25-256x4=225-1024=-799

(39.42-37.42):42=[42.(39-37)]:42=42x2:42=1x2=2

2448:[190-(23-6)]=2448:[190-17)=2448:173=2448/173 nha Dương Ngọc Phuong Linh

\(a.3.5^2-16.2^2=3.25-16.4=75-64=11\)

\(b.\left(39.42-37.42\right):42=\left(39-37\right).42:42=2.1=2\)

\(c.2448:\left[190-\left(23-6\right)\right]=2448:\left(190-17\right)=2448:173=\frac{2448}{173}\)