Toán Lớp 9: (m ² -m+1).1+m-1=5
Giair bất phương trình
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 9: (m ² -m+1).1+m-1=5
Giair bất phương trình
Comments ( 2 )
<=> m^2-m+1+m-1=5
<=> m^2+(m-m)+(1-1)=5
<=> m^2+0+0=5
<=> m^2=5
<=> m^2=[((sqrt5)^2),((-sqrt5)^2):}
<=> m=+-sqrt5
Vậy S={+-sqrt5}