Register Now

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: Cho a,b,c>0 thỏa mãn a ²+b ²+c ²+(a+b+c) ² ≤4 Chứng minh $\frac{ab+1}{(a+b)²}$ + $\frac{cb+1}{(c+b)²}$ + $\frac{ac+1}{(a+c)²}$ ≥3

Home/ Toán Lớp 9: Cho a,b,c>0 thỏa mãn a ²+b ²+c ²+(a+b+c) ² ≤4 Chứng minh $\frac{ab+1}{(a+b)²}$ + $\frac{cb+1}{(c+b)²}$ + $\frac{ac+1}{(a+c)²}$ ≥3