Toán Lớp 8: tìm x biết:3x(x-2022)-x+2022=0
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 8: tìm x biết:3x(x-2022)-x+2022=0
Comments ( 1 )
Giải đáp:
x \in {1/3 ; 2022}
Lời giải và giải thích chi tiết:
3x(x – 2022) – x + 2022 = 0
<=> 3x(x – 2022) – (x – 2022) = 0
<=> (3x – 1)(x – 2022) = 0
<=> \(\left[ \begin{array}{l}3x – 1 = 0\\x- 2022 = 0\end{array} \right.\)
<=> \(\left[ \begin{array}{l}x = \dfrac{1}{3}\\x = 2022\end{array} \right.\)
Vậy x \in {1/3 ; 2022}