=>\(\left(x-1\right)^{x+2}\left[\left(x-1\right)^4-1\right]=0\)
=>(x-1)*x*(x-2)=0
=>\(x\in\left\{0;1;2\right\}\)
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Tìm x biết:
a) \(\left|x+2\dfrac{1}{2}\right|=\left|3x+1\right|\)
b) \(\left|2x-6\right|+\left|x+3\right|=8\)
c) \(2.\left|x+2\right|+\left|4-x\right|=11\)
Tìm x, biết:
a) \(\dfrac{-3}{2}x+\dfrac{1}{4}=\dfrac{1}{2}\left(x+1\right)\)
b) \(\left(6-3\sqrt{x}\right)\left(\left|x\right|-7\right)=0\)
\(x^2-19=5.9;\left(2x+1\right)^3=-0,001;\left(\dfrac{5}{6}\right)^{2x-1}=\left(\dfrac{5}{6}\right)^5;\left(\dfrac{1}{3}x-\dfrac{2}{3}\right)^3=27;\left(\dfrac{1}{32}\right)^x=\left(\dfrac{1}{2}\right)^{15}\)
Thu gọn: Bleft(x-3right)left(x+3right)left(x^2+9right)-left(x^2+2right)left(x^2-2right)Tleft(x-5right)left(x+2right)+3.left(x-2right)left(x+2right)-left(3x-frac{1}{2}right)^2+5x^2Qleft(x-2right)^3+6left(x-1right)^2-left(x+1right)left(x^2-x+1right)Làm đc cái nào thì làm, ko bắt m.n làm cả đâu ! Làm đc hết thì mk cảm ơn!
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Thu gọn:
\(B=\left(x-3\right)\left(x+3\right)\left(x^2+9\right)-\left(x^2+2\right)\left(x^2-2\right)\)
\(T=\left(x-5\right)\left(x+2\right)+3.\left(x-2\right)\left(x+2\right)-\left(3x-\frac{1}{2}\right)^2+5x^2\)
\(Q=\left(x-2\right)^3+6\left(x-1\right)^2-\left(x+1\right)\left(x^2-x+1\right)\)
Làm đc cái nào thì làm, ko bắt m.n làm cả đâu ! Làm đc hết thì mk cảm ơn!
Tìm x a,3-xx+1,8b,2x-57x+35c,2left(x+10right)3left(x-6right)d,8left(x-dfrac{3}{8}right)+16left(dfrac{1}{6}+xright)+xe,dfrac{2}{9}-3xdfrac{4}{3}-xg,dfrac{1}{2}x+dfrac{5}{6}dfrac{3}{4}x-dfrac{1}{2}h,x-4dfrac{5}{6}left(6-dfrac{6}{5}xright)k,7x^2-116x^2-2m,5left(x+3.2^3right)10^2n,dfrac{4}{9}-(dfrac{1}{6^2})dfrac{2}{3}left(x-dfrac{2}{3}right)^2+dfrac{5}{12}
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Tìm x
\(a,3-x=x+1,8\)
\(b,2x-5=7x+35\)
\(c,2\left(x+10\right)=3\left(x-6\right)\)
\(d,8\left(x-\dfrac{3}{8}\right)+1=6\left(\dfrac{1}{6}+x\right)+x\)
\(e,\dfrac{2}{9}-3x=\dfrac{4}{3}-x\)
\(g,\dfrac{1}{2}x+\dfrac{5}{6}=\dfrac{3}{4}x-\dfrac{1}{2}\)
\(h,x-4=\dfrac{5}{6}\left(6-\dfrac{6}{5}x\right)\)
\(k,7x^2-11=6x^2-2\)
\(m,5\left(x+3.2^3\right)=10^2\)
\(n,\dfrac{4}{9}-(\dfrac{1}{6^2})=\dfrac{2}{3}\left(x-\dfrac{2}{3}\right)^2+\dfrac{5}{12}\)
Tìm x biết: \(\left|x+\frac{1}{2}\right|+\left|x+\frac{1}{6}\right|+\left|x+\frac{1}{12}\right|+\left|x+\frac{1}{20}\right|+...+\left|x+\frac{1}{110}\right|=11x\) = 11x
\(2\left|2x-6\right|=\dfrac{5}{6}-\left|x-3\right|\)
2:\(\left|x+2013\right|+\left|x+2014\right|+\left|x+2045\right|=2\)
3:\(\left|2x-1\right|=\left|x+1\right|\)
4:\(\sqrt{\left(x+\sqrt{5}\right)}+\sqrt{\left(y-\sqrt{3}\right)^2}+\left|x-y-z\right|=0\)
a, \(\text{[}\left(x-y\right)^3+3\left(x-y\right)\text{]}:\dfrac{1}{3}\left(x-y\right)\)
b, \(\left(8x^3-27y^3\right):\left(2x-3y\right)\)
c, \(\text{[}5\left(x+2y\right)^6-6\left(x+2y\right)^5\text{]}:2\left(x+2y\right)^4\)
Tìm x biếta)left|2x-3right|-xleft|2-xright|b)left|x+3right|+left|x+1right|3xc)2005left|x-4right|+left|x-10right|+left|x+101right|+left|x+990right|+left|x+1000right|d)left|x+frac{1}{2}right|+left|x+frac{1}{6}right|+left|x+frac{1}{20}right|+..+left|x+frac{1}{110}right|11x
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Tìm x biết
a)\(\left|2x-3\right|-x=\)\(\left|2-x\right|\)
b)\(\left|x+3\right|+\left|x+1\right|=\)\(3x\)
c)\(2005=\left|x-4\right|+\left|x-10\right|+\left|x+101\right|+\left|x+990\right|+\left|x+1000\right|\)
d)\(\left|x+\frac{1}{2}\right|+\left|x+\frac{1}{6}\right|+\left|x+\frac{1}{20}\right|+..+\left|x+\frac{1}{110}\right|=11x\)
\(\left(x-1\right)^{x+2}=\left(x-1\right)^{x+6}\left[x\inℤ\right]\)