a) x^2 - x = 0
x(x-1)=0
x=0 hoặc x=1
b) (x-2)^2 - 3(x-2)=0
(x-2)(x-5)=0
x=2 hoặc x=5
c) pt <=> 3(x - 1) - 2(x - 1)=0
<=> x-1=0
<=> x = 1
a) \(\Rightarrow x\left(x-1\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x=0\\x=1\end{matrix}\right.\)
b) \(\Rightarrow\left(x-2\right)\left(x-5\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x=2\\x=5\end{matrix}\right.\)
c) \(\Rightarrow3\left(x-1\right)-2\left(x-1\right)=0\)
\(\Rightarrow x-1=0\Rightarrow x=1\)
d) \(\Rightarrow\left(x-5\right)\left(x+5\right)+\left(x-5\right)^2=0\)
\(\Rightarrow\left(x-5\right).2x=0\)
\(\Rightarrow\left[{}\begin{matrix}x=0\\x=5\end{matrix}\right.\)
e) \(\Rightarrow\left(x-1\right)\left(x+1\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x=1\\x=-1\end{matrix}\right.\)
d) pt <=> (x-5)(x+5) + (x-5)^2=0
<=> (x-5).2x=0
<=> x=0 hoặc x=5
e) pt <=> (x+1)(x-1)=0
<=> x=-1 hoặc x=1
