Tim x biet
(2x-5)(4+3x).x<0
tim x biet /2x-1/-3x=0
Tim xthuoc Z biet:
1,|2x-5|-|2x+9|=0
2,|x+1|-|x+2|-|3-x|=7
3,|2x+3|+|3x+2|-|4-x|=10
Tim x biet rang:
a) 4/4^x + 3.4^2-x = 832
b) (3x - 2)^2002 = (3x - 2)^2004
c) /1 - 2x/ + x + 2 = 0
tim x biet ll3x-3l+2x+1l=3x+2021^0
tim x biet -3x/4.(1/x+2/7)=0
Tim x , biet : \(A,[3x - 4] = x ; B, [5x -3] = 2x + 1\)
tim x , biet :
1 ) 2017 - \ x - 2017 \ = x
2) -1/2 . ( 3x - 1 ) + 3/4 . ( 3-2x) = -3 . ( x/2 - 1 ) - ( 4/5) mu -1
tim x biet /3x+4/=2/2x-7/