(x+1/3)^4 = 16 = 2^4

=> x + 1/3 = 2

x = 5/3

\(\left(x+\frac{1}{3}\right)^4=16\)

\(\Rightarrow\left(x+\frac{1}{3}\right)^4=2^4\)

\(\Rightarrow x+\frac{1}{3}=2\)

\(\Rightarrow x=2-\frac{1}{3}\)

\(\Rightarrow x=\frac{6}{3}-\frac{1}{3}\)

\(\Rightarrow x=\frac{5}{3}\)

\(x+\frac{1}{3}=16:4\)

\(=x+\frac{1}{3}=4\)

\(x=4-\frac{1}{3}\)

\(x=\frac{11}{3}\)

(1/2+1/8)+(1/4+1/16)+(1/8+1/32)+1/64

=1/10+1/20+1/40+1/64

=61/320

lấy 1/64 làm mẫu xố chung

1/64+2/64+4/64+8/64+12/64+32/64=59/64

MTC: 64

=> \(\frac{32}{64}+\frac{16}{64}+\frac{8}{64}+\frac{4}{64}+\frac{2}{64}+\frac{1}{64}\)

= \(\frac{63}{64}\)

k minh truoc minh giai cho

Xx4+(1/2+1/4+1/8+1/16)=23/16

Xx4=23/16-(1/2+1/4+1/8+1/16)

Xx4=1/2

X=1/2:4

X=1/8

1/8 nha bn

ako lop may mik lop 4 neu ban lop 4 thi ket ban nha

( 1/4- x) ^2             =29/16- 125%

( 1/4- x)^2              =  49/16

( 1/4- x)^ 2              = (7/4)^2

-> 1/4- x         = 7/4

           x            = 1/4- 7/4

        x              =  -3/2

\(2^{x-1}=16\)

\(\Leftrightarrow2^{x-1}=2^4\)

\(\Leftrightarrow x-1=4\)

\(\Leftrightarrow x=5\)

Vậy x=5

x= 5 nha bạn

\(2^{x-1}=16\)

\(2^{x-1}=2^4\)

\(>>x-1=4\)

\(>>x=4+1\)

\(>>x=5\)

a) -x - 84=-16-213

   -x-84=-229

    -84+229=x

        145 =x

b) /x+2/= 316

suy ra x+2=316 hoac x+2=-316

  * x+2 = 316

       x = 314

* x+2 =-316

    x   = -318

vay x=314 hoac x=-318

c) /x+7/=15

suy ra x+7=15 hoac x+7=-15

   x+7=15

     x  = 8

   x+7= -15

     x = -22

vay x= 8 hoac x=-22

d) 19-4=/x-1/

   15=/x-1/

suy ra x-1=15 hoac x-1=-15

x-1=15

   x = 16

x-1=-15

  x= -14

vay x=16 hoac x=-14

\(-\left(x+84\right)+213=-16\)

\(=>-x-84+213=-16\)

\(=>-x=-16+84-213=-145\)

\(=>x=145\)

\(\left|x+2\right|=341+\left(-25\right)\)

\(=>\left|x+2\right|=341-25=316\)

\(=>\orbr{\begin{cases}x+2=316\\x+2=-316\end{cases}}\)

\(=>\orbr{\begin{cases}x=314\\x=-318\end{cases}}\)

\(\left|x+7\right|=\left|-15\right|\)

\(=>\left|x+7\right|=15\)

\(=>\orbr{\begin{cases}x=15-7\\x=-15-7\end{cases}}\)

\(=>\orbr{\begin{cases}x=8\\x=-22\end{cases}}\)

\(19-\left|x-1\right|=4\)

\(=>\left|x-1\right|=19-4=15\)

\(=>\orbr{\begin{cases}x-1=15\\x-1=-15\end{cases}}\)

\(=>\orbr{\begin{cases}x=16\\x=-14\end{cases}}\)

C

C

c?

42-2(x+16) +12 :2=6(x-1)+ (-4)^3 :16

42- 2x- 32 +6 = 6x - 6 - 64: 16

(42 - 32 +6) - 2x = 6x - 6 - 4

16 = 2x = 6x- 10

16+10= 2x+6x

26= 8x 

x= 26/8

x= 13/4

42-2(x+16)+12:2=6(x-1)+(-4)³:16

42-2(x+16)+6=6(x-1)-64:16

42-2x-32+6=6x-6-4

-2x+16=6x-10

6x+2x=16+10

8x=26

x=3,25