Question

Tìm x biết: 
(x + 1/2) + (x + 1/4) + (x + 1/8 + (x + 1/16) = 1
Trả lời: 
x = .................

Answer 1

i don't know

sorry nhìu nha

Answer 2

                       giải 

\(\left(x+\frac{1}{2}\right)+\left(x+\frac{1}{4}\right)+\left(x+\frac{1}{8}\right)+\left(x+\frac{1}{16}\right)=1\)

\(\left(x+x+x+x\right)+\left(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}\right)=1\)

\(4x=\left(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}\right)=1\)

Đặt A = \(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}\)

vậy ta có : \(4x+\frac{15}{16}=1\)

suy ra : \(4x=1-\frac{15}{16}\)

 \(4x=\frac{1}{16}\)

\(x=\frac{1}{16}:4=\frac{1}{16}x\frac{1}{4}=\frac{1}{64}\)

Vậy \(x=\frac{1}{64}\)