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 m de bat pt sau co nghiem :
3-mx< 2(x-m) - (m+1)*2
Cho phuong trinh (2x-m) / (x-2) + (x-1) / (x+2) = 3. Tim m de phuong trinh co nghiem duong.
tim m de x=3 la 1 nghiem cua pt : x^2 - m x 3 - 3
giai giup mik vs
cho pt: 3(a-2)x+2a(x-1)=4a+3 (1)
a) giai pt (1) vs a= -2
b) tim a de pt (1) co nghiem x=1
xin cam on
tim gia tri cua a de nghiem cua pt
\(\frac{a^2-4}{2x-5}=2+a\) la so nguyen duong nhung nho hon 2
Tim a de \(\frac{2x+a}{a-2}-\frac{a-2x}{a+2}=\frac{6a}{a^2-4}\)co nghiem dung voi moi x.
Tim a de \(\frac{2x+a}{a-2}-\frac{a-2x}{a+2}=\frac{6a}{a^2-4}\)co nghiem dung voi moi x.
Tim a de \(\frac{2x+a}{a-2}-\frac{a-2x}{a+2}=\frac{6a}{a^2-4}\)co nghiem dung voi moi x.
