\(\left(x-1\right)^5-\left(x-1\right)^4=0.\)
\(\Leftrightarrow\left(x-1\right)^4\left(x-1-1\right)=0\)
\(\Leftrightarrow\left(x-1\right)^4\left(x-2\right)=0\)
\(\orbr{\begin{cases}\left(x-1\right)^4=0\\\left(x-2\right)=0\end{cases}}\orbr{\begin{cases}x-1=0\\x=2\end{cases}\Leftrightarrow}\orbr{\begin{cases}x=1\\x=2\end{cases}}\)
Vậy x=1 ; x=2
Tìm x:
a) \(\dfrac{1}{3}.x+\dfrac{2}{5}\left(x-1\right)=0\)
b)\(-5.\left(x+\dfrac{1}{5}\right)-\dfrac{1}{2}.\left(x-\dfrac{2}{3}\right)=x\)
c)\(\left(x+\dfrac{1}{2}\right).\left(\dfrac{2}{3}-2x\right)=0\)
d)\(9.\left(3x+1\right)^2=16\)
Tìm x, biết :
a) \(\left(\frac{3}{4}.x-\frac{9}{16}\right).\left(\frac{1}{3}+\frac{-3}{5}:x\right)=0\)
b) \(\left(x-\frac{1}{3}\right).\left(x+\frac{2}{5}\right)>0\)
c) \(\left(x+\frac{3}{5}\right).\left(x+1\right)< 0\)
Tìm x, biết :
a) \(\left(\frac{3}{4}.x-\frac{9}{16}\right).\left(\frac{1}{3}+\frac{-3}{5}:x\right)=0\)
b) \(\left(x-\frac{1}{3}\right).\left(x+\frac{2}{5}\right)>0\)
c) \(\left(x+\frac{3}{5}\right).\left(x+1\right)< 0\)
Tìm x biết:
\(a,\left(x-\dfrac{3}{4}\right)+50\%=\dfrac{1}{6}\)
\(b,\dfrac{1}{2}x-\dfrac{5}{6}x=\dfrac{7}{2}\)
\(c,\left(4-x\right)\left(3x+5\right)=0\)
\(d,\dfrac{x}{16}=\dfrac{50}{32}\)
\(e,\left(2x-3\right)+\dfrac{3}{2}=-\dfrac{1}{4}\)
Tìm x \(\in\)Z , biết:
a)(\(\left(x-4\right).\left(x+7\right)=0\)
b)\(x.\left(x+3\right)=0\)
c)\(\left(x-2\right).\left(5-x\right)=0\)
d)\(\left(x-1\right).\left(x^2+1\right)=0\)
Tìm x:
\(\left(\frac{1}{7}x-\frac{2}{7}\right)\left(-\frac{1}{5}x+\frac{3}{5}\right)\left(\frac{1}{3}x+\frac{4}{3}\right)=0\)
tìm x biết :
a. \(\frac{1}{3}.x+\frac{2}{5}.\left(x-1\right)=0\)
b.\(3.\left(2.x-\frac{5}{4}\right)=\left(3-1\frac{1}{2}\right).\left(x-\frac{1}{2}\right)\)
Tìm x thuộc z:
\(a,\left(x^2+5\right)\left(x^2-25\right)=0\)
\(b,\left(x-2\right)\left(x+1\right)=0\)
\(c,\left(x^2+7\right)\left(x^2-49\right)< 0\)
\(d,\left(x^2-7\right)\left(x^2-49\right)< 0\)
\(e,\left(x-1\right)\left(x-2\right)\left(x^2+4\right)>0\)
GIÚP MIK VS, MIK CẦN GẤP
Tìm x :
\(a,\left(x+1\right)\cdot\left(x^2-4\right)=0\)
\(b,x^{15}=x\)
\(c,\left(x-5\right)^4=\left(x-5\right)^6\)
\(d,\left(2\cdot x+1\right)^3=125\)
