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|x-1|=0
x-1=0
x=0+1
x=1
Vậy x=1
-13.|x|=-26
|x|=-26:(-13)
|x|=2
=> x=+2
Vậy x=+2
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a)
x-3=15
x = 15+3=18
b)
x+7-13=13
x+7 =13-13=0
x = 0-7=-7
c)
x+3-16=-4
x+3 =-4+16=12
x = 12-3=9
d)
26-x-9=-13
-x-9= -13-26=-39
-x =-39+9=-30
x=30
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a, \(\left|x+3\right|=15\)
TH1 : \(x+3=15\Leftrightarrow x=12\)
TH2 : \(x+3=-15\Leftrightarrow x=-18\)
b, \(\left|x-7\right|+13=15\Leftrightarrow\left|x-7\right|=2\)
TH1 : \(x-7=2\Leftrightarrow x=9\)
TH2 : \(x-7=-2\Leftrightarrow x=5\)
c, \(\left|x-3\right|-16=-4\Leftrightarrow\left|x-3\right|=12\)
TH1 : \(x-3=12\Leftrightarrow x=15\)
TH2 : \(x-3=-12\Leftrightarrow x=-9\)
d, \(26-\left|x+9\right|=-13\Leftrightarrow\left|x+9\right|=39\)
TH1 : \(x+9=39\Leftrightarrow x=30\)
TH2 : \(x+9=-39\Leftrightarrow x=-48\)
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x2+26=13+689
x2+26=702
x2=702-26
x2=676
x=26
Vậy x=26
Chúc em học tốt^^
x2 + 26 = 13 + 663
x2 +26 = 676
x2 = 676 - 26 = 650
\(x\in\left\{-5\sqrt{6};5\sqrt{6}\right\}\)
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-16 + 23 + x = -16
7 + x = -16
x = -16 - 7
x = -23
2x + 35 = -15
2x = -15 - 35
2x = -50
x = -25
-13 x |x | = -26
x = -26 : (-13)
x = 2
Vậy x = 2 hoặc -2
|2x - 5| = 13
2x = 13 + 5
2x = 18
x = 9
(x - 3) x (x + 2) = 0
\(\Leftrightarrow\orbr{\begin{cases}x-3=0\\x+2=0\end{cases}}\Leftrightarrow\orbr{\begin{cases}x=3\\x=-2\end{cases}}\)
2)2x+35=-15
2x =-15-35
2x = -50
x =-25
1)-16+23+x=-16
7+x =-16
x =-16-7
x =-23
3)-13 * lxl =-26
lxl = -26:-13
lxl =2
<=>x=-2 hoac x=2
5) (x-3).(x+2) =0
<=>\(\orbr{\begin{cases}x-3=0\\x+2=0\end{cases}}\) <=>\(\orbr{\begin{cases}x=3\\x=-2\end{cases}}\)
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26-lx+9l=-13
=> |x+9|=26-(-13)
=> |x+9|=26+13
=> |x+9|=39
=> x+9=39 hoặc x+9=-39
=> x=30 hoặc x=-48
\(\Rightarrow\left|x+9\right|=26-\left(-13\right)=39\)
\(\Rightarrow x+9=39\) hoặc \(x+9=-39\)
=> x = 30 hoặc x = -48
-13 . | x | = -26
| x | = ( -26 ) : ( -13 )
| x | = 2
\(\Rightarrow\orbr{\begin{cases}x=2\\x=-2\end{cases}}\)
=> |x| = -26 : (-13) = 2
=> x=2 hoặc x=-2
Vậy x thuộc {-2;2}
Tk mk nha