(2x+1)^3=125
(2x-1)^4=16
6.3^x-2.3^x=36
2^x+1-2^x=32
Tìm x
( x - 2)^2 = 9x 16
(2x + 1)^2 = 25
(x - 4)^2 = 36
a) 16. x2 =64
b) (5.x-2)-64= -36
c) (2x-10).(5-x)=0
a) 16 . 36 - 16 . 37
b) 36 : 4 . 3 + 9 . 50
c) 2 . (5 . 16 - 18) + 36 : 18 . 2
d) 48 : 8 . 5 + 5 . 44
e) 5 . 4 - 18 : 3
f) 2 . 25 + 169 : 13 - 54 : 27
tính nhanh
b) ( -36 ) x ( 16- 41) - 16 x ( 41 - 36 )
c) 15 x (-27 + 30 ) -27 x (30 - 15 ) -30 x (15 +27 )
d)31 x (-18) +31 x (-81)-31
c)Tìm số tự nhiên x ,biết:
1)36-x:2=16
2)401(x-3)=2015^2015:2015^2104
a) 12x=-36
b) -2/x/ =-16
c) -5x - 27=-63
Tìm số nguyên x, biết: a) 4/6 = 16/x b) -5/14 = x/42 c) x/11 = -36/132 d) 5/x+2 = 13/39
Tìm x, biết: a) x = 1/4 + 5/13 b) x/3 = 2/3 + -1/7 c) x/3 = 16/24 + 24/ 36
d) x/15 = 1/5 + 2/3