=36:43+2.25

=36/43+50

=2186/43

\(6^2:43+2.5^2\)

\(=36:43+2.25\)

=\(\frac{36}{43}+50\)

\(=\frac{2186}{43}\)

Ý bạn là 6³:4.3+2.5² đúng ko ? Dấu chấm là dấu nhân đúng ko ?

6³:4*3+2*5²

=216:4*3+2*25

=54*3+2*25

=162+50

=212

chúc bạn học tốt ! ^_^

Lời giải:

a. 

$=5^{6-3}+2^{3-2}=5^3+2^1=125+2=127$
b.

$=3333:3+225:15=1111+15=1126$

c.

$=15.2^3+4.3^2-5.7=15.8+4.9-35=120+36-35=120+1=121$

d.

$=5.4^2-18:3^2=5.16-18:9=80-2=78$

e.

$=6^2:4.3+2.5^3=36:4.3+2.125$

$=9.3+250=27+250=277$

f.

$=80-(4.25-3.8)=80-(100-24)=80-100+24=-20+24=4$

\(a.6^2:4.3+2.5^2=36:4.3+2.25=9.3+50=27+50=77\)

\(b.2.\left(5.4^2-18\right)=2.\left(5.16-18\right)=2.\left(80-18\right)=2.62=124\)

 a) 3² . 5³ + 9² = 9 . 125 + 81

= 1 125 + 81 = 1 206

b) 8³ : 4² - 5² = 512 : 16 - 25 = 32 - 25 = 7

c) 3³ . 9² - 5².9 + 18 : 6 = 27 . 81 - 25 . 9 + 3

= 2 187 - 225 + 3 = 1 962 + 3 = 1 965

 a) 3² . 5³ + 9² = 9 . 125 + 81

= 1 125 + 81 = 1 206

b) 8³ : 4² - 5² = 512 : 16 - 25 = 32 - 25 = 7

c) 3³ . 9² - 5².9 + 18 : 6 = 27 . 81 - 25 . 9 + 3

= 2 187 - 225 + 3 = 1 962 + 3 = 1 965

a, [387.2+757].2+10²

⁼[774+757].2+100

=1531.2+100

=3062+100=3162

b, 15+2.(144:12-2.3)

=15+2.(12-6)

=15+2.6=15+12=27