Toán Lớp 6: x mũ 2 +5x = 0
Đừng làm tắt nha
Leave a reply
Register Now
Login
Lost Password
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Toán Lớp 6: x mũ 2 +5x = 0
Đừng làm tắt nha
Comments ( 2 )
x^2 + 5x = 0
⇒ x . x + 5x = 0
⇒ x(x + 5) = 0
⇒ \(\left[ \begin{array}{l}x=0\\x+5=0\end{array} \right.\)
⇒ \(\left[ \begin{array}{l}x=0\\x=0-5\end{array} \right.\)
⇒ \(\left[ \begin{array}{l}x=0\\x=-5\end{array} \right.\)
Vậy x = 0 hoặc -5
x^2+5x=0
x(x+5)=0
⇒\(\left[ \begin{array}{l}x=0\\x+5=0\end{array} \right.\)
⇒\(\left[ \begin{array}{l}x=0\\x=-5\end{array} \right.\)
Vậy x=0 hoặc x=-5