Toán Lớp 8: x mũ 2 – 7x + 10 = 0
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Toán Lớp 8: x mũ 2 – 7x + 10 = 0
gấp lắm ạ
Comments ( 2 )
x^2 – 2x – 5x + 10 =0
x(x-2)-5(x-2) =0
(x-2)(x-5)=0
<=>\(\left[ \begin{array}{l}x-2=0\\x-5=0\end{array} \right.\)
<=>\(\left[ \begin{array}{l}x=2\\x=5\end{array} \right.\)
Vậy \(\left[ \begin{array}{l}x=2\\x=5\end{array} \right.\)