B1:tìm x biết a, (-2+x^2)(x^2-2)(x^2-2)(x^2-2)(x^2-2)=1 b, (2x+3)(x-4)+(x-5)(x-2)=(3x-5)(x-4) c,(8x-3)(3x+2)-(4x+7)(x+4)=(4x+1)(5x-1) d, 2x^2+3(x-1)(x+1)=5x(x+1) e, (8-5x)(x+2)+4(x-2)(x+1)=(2+x)(2-x) f, 4(x-1)(x+5)-(x+2)(x+5)=3(x-1)(x+2)
tìm x biết : x.(x+2/3)-x.(x-3/4)=7/12
b)\(\sqrt{x^2}+1\)=x+2
c)\(\left(2x+1\right)^5\)=\(\left(2x+1\right)^{2019}\)
Tìm x biết
a, 1/2( x+2 ) - 4( x-1/4 ) = 1/2x
b,5/2( x - 3/5 ) - 1/10 = x-3
c, 5/3( 3x - 3 ) + 1/2 = 1/2( 2x - 1 )
Tìm x biết : a,( 2x-3 )-( x-5 )= ( x+2 )-( x-1 ) b,2 ( x-1 )-5 (x+2 )= -10
a)tìm x biết: 5^x-1 + 5^x-3= 650
b)tìm x biết: gttd x+1 +gttd x+2 +.......+gttd x+100=605x (gttd: giá trị tuyệt đối)
c) tìm x,y biết : (2x+1)/5=(4y-5)/9=(2x+4y-4)/7x
Tìm x biết : a) 2x+3/15 = 7/5. b) x-2/9 = 8/3. c) -8/x = -x/18 d) 2x+3/6 = x-2/5. e) x+1/22 = 6/x f) 2x-1/2 = 5/x g) 2x-1/21 = 3/2x+1 h) 10x+5/6 = 5/x+1
1, Tìm x, biết
a, 2|x+2|+|4-x|=11
b, |x+5|-|1-2x|=x
c, |x|-|2x+3|=x-1
Tìm x biết
a,|x-1|+2x=3
b,|x+1|+|x+3|=10-4x
c,|x+1++3|x-2|-5|4-x|=13-2x
d,3|x-2|-2.|x+5|+4.|x-1|=9-7x
tìm x biết : 2/3-1/3 x (X-3/2) - 1/2 x (2X+1)=5
