Toán Lớp 8: $(x – 2)^{2}$ – 5x + 10 = 0
Tìm x
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: $(x – 2)^{2}$ – 5x + 10 = 0
Tìm x
Comments ( 2 )
<=>(x-2)^2-(5x-10)=0
<=>(x-2)^2-5.(x-2)=0
<=>(x-2)(x-2-5)=0
<=>(x-2)(x-7)=0
<=>[(x-2=0),(x-7=0):}
<=>[(x=2),(x=7):}
Vậy x\in{2;7}