x+6=125-36

x+6=89

x    =83

x+6=125+36

x+6=161

x=161-6

x=155

Vậy x=155

tk mk nha bn----_____-----

x + 6 = 125 + (-36)

=> x + 6 = 84

x = 84 - 6

=> x = 78

a: x^3=7^3

=>x^3=343

=>\(x=\sqrt[3]{343}=7\)

b: x^3=27

=>x^3=3^3

=>x=3

c: x^3=125

=>x^3=5^3

=>x=5

d: (x+1)^3=125

=>x+1=5

=>x=4

e: (x-2)^3=2^3

=>x-2=2

=>x=4

f: (x-2)^3=8

=>x-2=2

=>x=4

h: (x+2)^2=64

=>x+2=8 hoặc x+2=-8

=>x=6 hoặc x=-10

j: =>x-3=2 hoặc x-3=-2

=>x=1 hoặc x=5

k:

9x^2=36

=>x^2=36/9

=>x^2=4

=>x=2 hoặc x=-2

l:

(x-1)^4=16

=>(x-1)^2=4(nhận) hoặc (x-1)^2=-4(loại)

=>x-1=2 hoặc x-1=-2

=>x=3 hoặc x=-1

\(\dfrac{36^4\cdot125}{2^8\cdot5^4\cdot3^6}=\dfrac{2^8\cdot3^8\cdot5^3}{2^8\cdot5^4\cdot3^6}=3^2\cdot\dfrac{1}{5}=\dfrac{9}{5}\)

= ( 2^2 . 3^2)^4 . 5 ^ 3 / 2^8.5^4.3^6

= 2^8 . 3^8 . 5^3 / 2^8 . 5^4 . 3^6

=3^2/5

= 9/5

Chúc bạn học tốt ^^ !!

a)bằng 78897

b)bằng36875

a)=78897

b)=36875

a.12*123+3*4567+6*5310*2

1476+13701+31860*2

47037*2=94074

b.125*36+875*37

4500+32375

36870

b. 0

c. 112

d. 1250

e. -78

f. -67

b) [(24+-67)]-[-67-(-24)]=0
c) 2^3.17-2^3.14=112
d) 26.(-125)-125.(-36)=1250
e) 48-6(12+9)=-78
f) (-67).(1-301)-301.67=-67

a) \(x\cdot25=5^3\)

\(x\cdot25=125\)

\(x=\frac{125}{25}\)

\(x=5\)

b) \(6^x:6^2=6^4\)

\(6^x=6^4\cdot6^2\)

\(6^x=6^6\)

\(x=6\)

c) \(3x=27\)

\(x=27:3\)

\(x=9\)

d) \(5^x+1=125\)

\(5^x=124\)

...

e) \(x\cdot36=6^8\)

\(x=6^8:6^2\)

\(x=6^6\)

\(x=46656\)

g) \(7^x+1:7^2=7^9\)

\(7^x=7^9-\frac{1}{7^2}\)

......

a, x =  125: 25 =5

b , 6 ^x =6^4 . 6^2

6^x =6^6

=> x =6

c, 3x = 27 

=> 3x = 3 .9

=> x = 9 ( vì 3 =3 )

d, 5^x +1 =125

5 ^ x+1 =5^3

=>x +1 =3

=>x=2

e, x. 36 =6 ^8

x . 6^2 = 6^8

x = 6^8 : 6^2

x= 6^6

g , 7^x+1 : 7^2 = 7^9

7^x+1 = 7^2+9

7^x +1=7^ 11

=>x +1 =11

=> x =10

a: =2008(1+347+752)

=2008*1100

=2208800

b: 125*199*25*8*4

=125*8*25*4*199

=199*1000*100

=199000000

c: =36*(28+45)

=36*73=2628

d: 226*374+277*26

=84524+7202

=91726

`a)2008+2008*347+752*2008`

`=2008*(1+347+752)`

`=2008*1100`

`=2208800`

`125*199*25*8*4`

`=(125*8)*(4*25)*199`

`=1000*100*199`

`=19900000`

`c)226*374+277*26`

`=84524 + 7202`

`=91726`

bn tách ra a, b, c cho dễ nhìn nhé .