Viết các biểu thức sau dưới dạng một lũy thừa:
6; 3/2 x 9/4 x 81/16
7; (1/2)^7 x 8 x 32 x 2^8
8; (-1/7)^4 x 125 x 5
9; 4 x 32 : (2^3 x 1/16)
10; (1/7)^2 x 1/7 x 49
a) 16 - 18/x| = -8 -14|x|
b) 5 x|+7.(2/x|-3) =4.(x-4)+25
e) 15-3|4x +2| = 3 8) 18 -4.(6-2|x|) = - 3.(4|x|+5)+29
8) 27-5/x -10 = 4|x-10| - 18
h) 510 + 3x|-21 = 7- 2|15+3x|
c) 43x +2|-16= 20
d) 8|x - 1|-4 = 12+6|x-1|
giúp em với
Rút gọn biểu thức:
A) x – ( x/2 + 1/2 )
B) (x/2 – 1/2) : 2 + 1/2
C) (x/2 – 1/2) – (x/4 + 1/4)
D) (x/4 – 3/4) : 2 + 1/2
E) (x/4 – 3/4) – (x/8 + 1/8)
F) (x/8 – 7/8) : 2 + 1/2
G) (x/8 – 7/8) – (x/16 + 1/16)
H) (x/16 – 15/16) : 2 + 1/2
I) (x/16 – 15/16) – (x/32 + 1/32)
3.x + 5/16 + 2.x + 7/8=4+3.x/32 + 2.x
a) 460 + 85 . 4 = ( x + 200 ) : 4
x = ?
b) x : 15 + 42 = 15 + 25 . 8
x = ?
c) x - 32 : 16 = 48
x = ?
d) x - 6 : 2 - ( 48 - 24 . 2 : 6 - 3 ) = 0
x = ?
1 x 2 + 2 x 4 + 3 x 6 + 4 x 8 + 5 x 10 / 3 x 4 + 6 x 8 + 9 x 12 + 12 x 16 + 15 x 20
1) 168 - ( 18 - 2x ) x 12 = 120
2) [ 75 + ( 16 - x ) ] x 2 = 156
3) 124 - 24 x ( 3x - 16 ) = 76
4) [ ( 10 - x ) x 2 + 5 ] : 3 - 2 = 3
5) [ 80 + ( 62 - x ) ] : 17 - 7 = 1
6) 65 - ( 5x - 70 ) : 2 = 50
7) 504 : 9 136 - 2x ) + 4 = 32
8) ( 13x - 28 ) x 15 - 5 x 23 = 320
Mình cần gấp ạ !!!
1/ 10(X-7)-8(X+5)=6(-5)+24
2/ 8(X-|-7|)-6(X-2)=|-8|.6-50
3/ 2(4X-8)-7(3+X)=|-4|(3-2)
4/ 12(X-4)=6(x-2)-16(X+3)=7|-4|
5/ 4(X-5)-7(5-X)+10(5-X)=-3
bn nào giải giúp mik vs nha:)))
1 . 25 x { 32 : [ 12 - 4 + 4 x ( 16 : 8 ) ] }
2. 2195 x 1952 - 952 x 427 - 1952 x 1768
