Toán Lớp 8: Tìm x biết x(x – 3) – 5x + 15 = 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 x(x – 3) – 5x + 15 = 0
Comments ( 2 )
<=>x.(x-3)-(5x-15)=0
<=>x.(x-3)-5.(x-3)=0
<=>(x-5)(x-3)=0
<=>[(x-5=0),(x-3=0):}
<=>[(x=5),(x=3):}
Vậy x\in{5;3}