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 nguyen biet /x-1/^2+(x-1)^2=2015./x-1/
tim x
giup dum
x+(x+1)+(x+2)+...+(x+2003)=2004 tim x biet
tim x biet : |x^2+x|+|(x+1)*(x-2)|=0
tim x biet 50%.x+2/3.x=x+4
Tim x; biet |x-2|+|x-3|+|x-4|=2
tim x biet /x+1/+/x+3/+....+/x+2013/=2014x
tim x biet |x(x-2)| =1
tim x thuoc z biet (x-5)^x+1-(x-5)^x+5