4x+3 / x-2 =4x-8+8+3 /x-2 =4x-8+11 /x-2 =4x-8 / x-2 +11 / x-2
=4x-4x2 / x-2 + 11 / x-2 =4x(x-2) / x-2 +11 / x-2=4+11 /x-2
De ( 4x+3) / (x-2)thi 11÷(x-2)
Suy ra x-2thuoc ư(11)hay x-2thuoc {-11;-1;1;11}
Voi x-2=-11 Voi x-2=-1
x =-11+2 x =-1+2
x =-9 x=1
Voi x-2=1 Voi x-2=11
x =1+2 x =11+2
x =3 x =13
Kl:vay de (4x+3/x-2 thi x=-9;x=1;x=3;x=13
câu 1: tìm x biết:
a, (4x-15)^2016=(4x-15)^2015
b,2^x+2^x+1+2^x+2+2^x+3-480=0
tìm X biết
a) 1/2 X + 2/3 ( X - 1 ) = 1/3
b) X mu 2 4X =0
c) 2/3 X : 1/5 = 3/2 : 1/4
D) 4X -( 3 + 5 ) = 14
tìm x
a) 4x - 33 = -5 b) 2.x + 1/4 = 3/2 d) |x + 2/7| = 1/6
tìm x,a,b biết 4x - 1 = 3^a và x + 2 = 3^b
tìm x, biết:
a, |x|+|x+1|+|x+2|+|x+3|=6x
b, |x|+|x-1|+|x+3|=4x-4
Tìm x, a, b nguyên dương biết 4x-1=3^a; x+2=3^b
Tìm x:
a) (3x-7)^5=32
b) (4x-1)^3=27.125
c) 2^x+2^2^x+1=96
d)3^4x +4=81 ^x+3
Giair giùm nha
Tìm x biết:
1)3/4x-1/4=2(x-3)+1/4x
2)30%.x-x+5/6=1/3
3)(2.x-1).(3.x+9)=0
Bài 1: Tìm x
a) | 2 + 3x | = | 4x - 3 |
b) | 7x + 1 | - | 4x - 3 |
