Tính:

a) 2^5 x 13^12 x 7^8 : 27 x 13^10 x 7^9 

b) 2^n x 11 x 3 : 6^n x 3

c) 5^5 x 7 x 9^5 : 15^10

d) 7 x 8^10 x 27^9 - 8 x 9^13 x 2^27 : 7 x 6^26 x 2^2 - 2^4 x 8^3 x 27^9

e) 2^2^1^2015

f) 2015^0^2015^0^2015

Tính:

a) 2^5 x 13^12 x 7^8 : 2^7 x 13^10 x 7^9 

b) 2^n x 11 x 3 : 6^n x 3

c) 5^5 x 7 x 9^5 : 15^10

d) 7 x 8^10 x 27^9 - 8 x 9^13 x 2^27 : 7 x 6^26 x 2^2 - 2^4 x 8^3 x 27^9

e) 2^2^1^2015

f) 2015^0^2015^0^2015

1. 13-(x-5)=8 8. (x-5)^6=(x-5)^8

2. 8-(x-10)=23-(-4+12) 9. (3-x).(x-3)=0

3. 134-5(x+4)=34 10. -32-(x-5)=0

4. |5-x|=7

5. 20+8.(x+3)=5^2.4

6. 42x=39.42-37.42

7. |x|=2-(-7)

1) 4- |x-5|=0

2)|7-3x|=1

3)5-3|x-3 |=x

4) 4-|x-1|=2(x+2) 

5)|x+3|-3|x-1|=0

6)11|x+1|-8|x-2|=0

7)2^|x-3|=8

8) 2^{-|x-5|2 =1}6

a) -12+(x-9)<0   tìm x thuộc Z

b)x-(13-x)=-24+(-7+x)

c) (x - 7)+( 5-x)=12-(-8+x)

d)5(x-6)-2(x+3)=12

e)3(x-4)-(8-x)=12

f) 7(x-3)-5(3-x)=11x-5

g) 7(x-9)-5(6-x)=-6+11x

a) -12+(x-9)<0   tìm x thuộc Z

b)x-(13-x)=-24+(-7+x)

c) (x - 7)+( 5-x)=12-(-8+x)

d)5(x-6)-2(x+3)=12

e)3(x-4)-(8-x)=12

f) 7(x-3)-5(3-x)=11x-5

g) 7(x-9)-5(6-x)=-6+11x

1.Tìm số nguyên x biết 

|x-3|=|x+7|

|3x+2|+|x-8|

|x+3|+|y-8|=0

|x-5|+|x-3|=0

(x-2)(x+6)=0

x(3x+6)=0

(2x-4)(x³-1)=0

(x-2)(x+7)>0

(x+3)(x+5)>0

(x+2)(x-5)<0

bài 2: tìm x

a) 3( 2-x) + 5( X-6)=-98

b) (x+ 7) (8-x) =0

c) -7 + | x-4| = -3

d) | x- 10| - (-12) =4

e) |x+ 2| <hoặc bằng 5

g) ( x- 5) ( x mũ 2 - 9) =0

H) (| x| + 2) ( 6 -2| x|)=0

A) 2(x-3)=5(x+4)

B) 8x-3/5=2x+8/8

X-5x+2/6=7-3x/4

C) 7x-3/5=5x+7/7

D) (3x-5)(7x+5)=0

E) (½x -3/4 )(5-2x)=0

G)( 2x+7)(x-5)(5x+1)

H) x+1/x-3 - 1/x-1=2/(x-1)(x-3)