2<x<5

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hok tút

( x - 10 ) ^2 = 5^2 

=> x - 10 = 5 

=> x = 5 + 10 

=> x = 15

\(\left(x-10\right)^2=5^2\)

\(\Leftrightarrow\left(x-10\right)^2-5^2=0\)

\(\Leftrightarrow\left(x-10-5\right)\left(x-10+5\right)=0\)

\(\Leftrightarrow\left(x-15\right)\left(x-5\right)=0\)

\(\Leftrightarrow\orbr{\begin{cases}x-15=0\\x-5=0\end{cases}\Leftrightarrow\orbr{\begin{cases}x=15\\x=-5\end{cases}}}\)

( 3x - 6 )^2 = 36 

=> ( 3x - 6 )^2 = 6^2

=> 3x - 6 = 6 

=> 3x = 6 + 6 

=> 3x = 12

=> x = 12 : 3

=> x = 4

( 3x - 6 )² =36

3x - 6 = 36

3x = 36 +6

3x = 42

x  = 42 : 3

x = 14

Vậy x = 14

Nhanh mà k đúng thj sao hihi

\(\left(x+2\right)+\left(x+3\right)=x\)

\(\Leftrightarrow x+2+x+3=x\)

\(\Leftrightarrow2x+5=x\)

\(\Leftrightarrow2x-x=-5\)

\(\Leftrightarrow x=-5\)

\(\left(2x-4\right)^{2018}=0\)

\(\Rightarrow2x-4=0\)

\(\Leftrightarrow2x=4\)

\(\Leftrightarrow x=2\)

=> ( 2x - 4 ) ^ 2018 = 0 ^ 2018

=> 2x- 4 = 0 

=> 2x = 0 + 4 

=> 2x = 4 

=> x = 4 : 2 

=> x = 2 

(1+2)+[(-3)+(-4)]+...+[(-999)+(-1000)]

=3-7+11-...-1999

=(3-7)+(11-15)+...+(1995-1999)

=-4+(-4)+...+(-4)

=-4.250

=-1000

 BÌNH 1              BÌNH 2

 3l                        5l

 3l                       0l

 0l                       3l

 3l                       3l

 1l                       5l  ( đổ 2l từ B1 vào B2 )

 1l                       0l

 0l                       1l

 3l                       1l

 0l                       4l

XONG RỒIIIIIIIII

0;\(\pm4;\pm8;\pm12;....\)

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hok tốt

Trar lời..........

Là 4;-4;2;-2;1;-1

Hk tốt

\(\left[\left(46-32\right)^2-\left(54-42\right)^2\right]\cdot36-1872\)

\(=\left[\left(14\right)^2-12^2\right]\cdot36-1872\)

\(=\left(196-144\right)\cdot36-1872\)

\(=52\cdot36-1872\)

\(=1872-1872\)

\(=0\)

giúp mik đi 2 k lun nhá

x-6=6-x

=>x=6