(x-3)2 - x/ x-3/ =0
+ Nếu x>/3
=> (x-3)2 -x (x-3) =0
=> (x-3)(x-3-x) =0 => -3(x-3) =0 => x-3=0 => x =3 (TM)
+Nếu x<3
=> (x-3)2 +x(x-3) =0
=> (x-3)(x-3+x) =0 => (x-3)(2x-3) =0 => x =3 ( loại) ; 2x-3 =0 => x =3/2 (TM)
Vậy x thuộc {3;3/2}
Tim x biet (x-2)(3-x)< 0
tim x thuoc Z biet x^3-x^2+x-1=0
Tim x biet:3*x+x2=0
tim x biet (x^2-1)(x^2-3)(x^2-5)(x^2-7)<=0
a, Cho F(x) = a x+b . Tim a,b biet f(0) = 3 va F(2) =-1
b, Cho F(x) =a x+ b. Tim a,b biet F(1) = -1 va F(-2) = 8
c, Cho F(x) =a x +b .tim a,b biet F(0) = 1 va F(-2) = -9
tim x thuộc q biet ( x - 2) nhân ( x+2/3 ) > 0
tim x biet
a) [x-3].[x+2]=0
b) [x+1] . x < 0
Tim x biet
(X+1)×(x+2)<0 x-2/3x+2 <0
(-3+3/x -1/3) ÷ (1+2/3+2/5)=-5/4
