Toán Lớp 8: 2x^2-2x=(x-1)^2 giải đi mn =)))
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Toán Lớp 8: 2x^2-2x=(x-1)^2 giải đi mn =)))
Comments ( 2 )
<=>2x^2-2x-(x-1)^2=0
<=> \(\left[ \begin{array}{l}x=-1\\x=1\end{array} \right.\)
Vậy x in{+-1}