Các câu hỏi tương tự
Tìm số tự nhiên x, biết
a) ( x + 1 ) 2 = 16
b) ( x + 1 ) 3 = 27
c) ( x + 1 ) 3 = 16
d) ( 2 . x - 1 ) 3 = 125 .
1.Tìm x
a)15-x=16
x=15-16
x=(-1)
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)
A =1/6 x 11 + 1/11 x 16 + 1 phần 16 x 21 + ........+ 1/496 x 501
B = 2/3 +2/15 + 2/ 35 +.....+2/19 x21
\(\dfrac{1}{5}\)x\(\dfrac{7}{6}\)+\(\dfrac{1}{5}\)x\(\dfrac{5}{16}\)+\(\dfrac{1}{5}\)x\(\dfrac{3}{16}\)
C1:(5-|x|).(x-3)=0
C2:(x-3)+(x-2)+(x-1)+...+15+16=16
Bài 1: Tìm x € N,biết
A) 2^x.16²=1024
B)64.4^x=16^8
C)2^x=16
Bài 1: Tính:
a) -25 . 63 - 25 . 3
Bài 2: Tìm x, biết:
c) ( x + 1 )2 = 16 d) ( -38 ) - ( x - 2 ) = -16
1 x 2 x 3 x 4 x 5 x 6 x 7 x ( 4 x 8 - 16 x 2 ) x 15 x 16 x 17 ... x 2019 x 2020
a,1/2*x+2/3*(x-2)=1/3
b,16x-1:16=44