cho pt: x^2-2.(m-2)+m^2=2m-3
Tim m de pt co 2 nghiem phan biet x1,x2 thoa man
\(\frac{1}{x1}+\frac{1}{x2}=\frac{x1+x2}{x}\)
cac ban oi giup minh di minh can gap lam
tim x
(x^2+3x-10).(x^2+3x+2)+36=0
minh dang can gap cac ban lam oi nhanh len nhe
TO HUA SE TICK
giup to voi
tim x
(x^2+3x-10).(x^2+3x+2)+36=0
minh dang can gap cac ban lam oi nhanh len nhe
TO HUA SE TICK
giup to voi
Bai 5
1/ Tim GTNN : A= x^2+3x+2
2/Tim x,y biet:
a/x^2-4x+y^2+2y+5=0
b/2x^2+y^2-2xy+10x+25=0
Giai ho minh bai 1,2,3,4,5 nhe !!! Minh dang len tren dien dan roi day !!!!
Minh can gap !!! Camon may ban tr'c nha
(2x+3)(x-5)=4x2+6x
cac ban giai ho minh minh dang can gap
bai 1 cho a,b,c>0
CMR: \(\frac{a}{1+b-a}+\frac{b}{1+c-b}+\frac{c}{1+a-c}>=1\)
cac ban oi giup minh. minh dang can gap lam. . lam on giup minh di. hu hu
Cho a, b, c,d la cac so thuc . Chung minh bat dang thuc sau:
a2 + b2 +c2 +d2 +e2 >= ab +ac + ad +ae
Lam giup minh nhe cac ban minh can gap lam
Co bai hinh 8 kho qua, cac ban giup minh nhe! cam on nhieu!
Cho tam giac ABC, AB = 4, AC = 4,5. Cho diem M thuoc AB, N thuoc AC, AM = AN = 3.
BN cat CM tai O. Tinh gia tri cua OB/ON + OC/OM?
Cac ban giai nhanh nhanh giup minh nhe, minh can gap
Bài 1: Thực hiện phép tính
g) (x − 2). (x + 2)
h) (3x + 1). (3x − 1)
i) (x2-1/2).(x2+1/2)
giup minh nha minh can gap