\(2\)x\(4\)x\(8\)x\(5\)x\(25\)x\(125\)

=(2x5)x(4x25)x(8x125)

=10x100x1000

=1000000

2x4x8x5x25x125 = ( 2 x 5 ) x ( 4 x 25 ) x ( 8 x 125 )

     = 10 x 100 x 1000

      = 1000000

Chúc bạn học tốt và đạt điểm cao ❤

134415-134415:45

=134415-2987

=131428

134415 - 134415 : 45 = 134415 - 2987

                                   = 131428

325 * 1574 - 325 * 325 - 325 * 249 = 325 * ( 1574 - 325 - 249 )

                                                       = 325 * 1000

                                                       = 325000

2 * 8 * 50 * 25 * 125 = ( 2 * 50 ) * 125 * ( 8 * 25 )

                                = 100 * 125 * 200

                                = 12500 * 200 

                               = 2500000

2 * 3 * 4 * 5 * 50 * 25 = ( 2 * 50 ) * ( 5 * 4 ) * ( 4 * 25 ) * 3 

                                  = 100 * 20 * 100 * 3

                                  = 100 * ( 20 * 3 )

                                  = 100 * 60

                                  = 6000

325 x 1574 -325 x 325 - 325 x 249= 325 x ( 1574-325-249)=325 x 1000= 325000

2 x 8 x 50 x 25 x 125 = ( 2 x 50) x ( 8 x 125) x 25 = 100 x 1000 x 25=2500000

2 x 3 x 4 x 5 x 50 x 25 = ( 2 x 50) x ( 25 x 4) x (3 x 5)=100 x 100 x 15 =150000

k cho mình nha!!!

4*325*25 - 5*325*20 

=325*100 -  100 * 325 

=325 * (100-100)

=325 * 0

=0 

k mik nha ^_^ 

(237*98+248+248)+(127- 102-127-127)  

650 : 25 - 325 : 25 - 225 : 25

= 650 : ( 325 - 25 ) - ( 225 - 25 )

= 650 : ( 300 - 200 )

= 650 : 100

= 6,5

\(650:25-325:25-225:25\)
\(=\left(650-325-225\right):25\)
\(=100:25\)
\(=4\)

=26-13-9=4

8125

8125

\(x:25=325\\ x=325\times25\\ x=8125\)

36×125×8=36×(125×8)=36×1000=36000

25×325×4=25×4×325=(25×4)×325=100×325=32500

Mà 36000>32500

Vậy: 36×125×8>25×325×4.

Đáp án C

nhìn thấy duy nhất một chữ rối!

(x+1/5)^2 =26/25-17/25

<=> (x +1/5)^2 =(3/5)^2

<=> x+1/5=3/5

=> x= 2/5

a) 
\(\left(x+\frac{1}{5}\right)^2+\frac{17}{25}=\frac{26}{25}\)

\(\left(x+\frac{1}{5}\right)^2=\frac{26}{25}-\frac{17}{25}\)

\(\left(x+\frac{1}{5}\right)^2=\frac{9}{25}\)

\(\left(x+\frac{1}{5}\right)^2=\left(\frac{3}{5}\right)^2\)
\(x+\frac{1}{5}=\frac{3}{5}\)

\(x=\frac{3}{5}-\frac{1}{5}\)

\(x=\frac{2}{5}\)
b) 
\(\frac{x+2}{327}+\frac{x+3}{326}+\frac{x+4}{325}+\frac{x+5}{324}+\frac{x+349}{5}=0\)

\(\frac{x+2}{327}+1+\frac{x+3}{326}+1+\frac{x+4}{325}+1+\frac{x+5}{324}+1+\frac{x+349}{5}=0\)
\(\frac{x+329}{327}+\frac{x+329}{326}+\frac{x+329}{325}+\frac{x+329}{324}+4+\frac{x+329}{5}=0\)

\(\left(x+329\right). \left(\frac{1}{327}+\frac{1}{326}+\frac{1}{325}+\frac{1}{324}+4+\frac{1}{5}\right)=0\)
\(\Rightarrow\left(x+329\right)=0\)
\(\Rightarrow x=-329\)

1.

(x + 1/5)² = 26/25 - 17/25 

(x + 1/5)² = 9/25 

Rút căn hai vế : 

|(x + 1/5)| = 3/5 

x = -4/5 
hoặc
x = 2/5

2.

(x + 2) / 327 + (x + 3) / 326 + (x + 4) / 325 + (x + 5) / 324 + (x + 349) / 5 = 0 
<=> (x + 2) / 327 +1+ (x + 3) / 326 +1+ (x + 4) / 325 +1+ (x + 5) / 324 +1+ (x + 349) / 5 -4 = 0 
<=> (x+ 329)/327 + (x+ 329)/326 + (x+ 329)/325 + (x+ 329)//324 + (x+ 329)/5 =0 
<=> (x+ 329).(1/327 + 1/ 326 + 1/325 + 1/324 +1/5) =0 
Do (1/327 + 1/ 326 + 1/325 + 1/324 +1/5) >0 nên x+ 329 =0 => x= -329 

Câu 1 chưa chắc đã đúng ( quên hết kiến thức lớp 6 rùi ) hihi

aaaaaaaa . chết rồi . cho mình sủa câu thứ nhất :

(x+1/5)² + 17/25=26/25

( x + 1/5 ) ² = 26/25 - 17/25

( x + 1/5 ) ² = 3/5²

x + 1/5 = 3/5

x = 2/5.