Question

a,4.5²-3.2+3³:  3²⁼

b,150: [25.( 18-4² )=

c,s=1+3+5....99=

d,125+70+375+230=

e,315-64:2³⁼

f,6x-5=31=

g,2.14.(x-5)=28=

giup minh voi

Answer 1

a,4.5²-3.2+ 3³ :  3²= 4* 5^2 - 3*(2+1)= 100 - 9 = 91 

b,150: [25.( 18-4² )= 150 : (25 * 2) = 3

c,S=1+3+5....99

= (1+99) +(3+ 97) +....+ (47 + 53) + (49 + 51) 

= 100 * 25 

= 2500

d,125+70+375+230= (125+ 375) +(70 + 230) = 500 + 300 = 800

e,315-64:2³ = 135 -8 = 127 

f,6x-5=31

6x = 36

x=6    

g,2.14.(x-5)=28

28 (x-5) = 28

x-5 =1

x=6  

Answer 2

a,4.5²-3.2+3³:  3²=97

b,150: [25.( 18-4² )=3

c,s=1+3+5....99=2500

d,125+70+375+230=800

e,315-64:2³=307

f,6x-5=31=>x=6

g,2.14.(x-5)=28=>x=6

cik cho mik nha bn!

Answer 3

dm bon giai toan tren mang

Answer 4

a,4.52-3.2+33:  32=97

b,150: [25.( 18-42 )=3

c,s=1+3+5....99=2500

d,125+70+375+230=800

e,315-64:23=307

f,6x-5=31=>x=6

g,2.14.(x-5)=28=>x=6

cik cho mik nha bn!