\(\frac{2x+5}{x+1}=\frac{2.\left(x+1\right)+3}{x+1}=2+\frac{3}{x+1}\)
=>x+1 E Ư(3)={-1;1;-3;3}
=>x E (-2;0;-4;2}
tick nhé
\(\frac{2x+5}{x+1}=\frac{2.\left(x+1\right)+3}{x+1}=2+\frac{3}{x+1}\)
=>x+1 E Ư(3)={-1;1;-3;3}
=>x E (-2;0;-4;2}
tick nhé
Tìm x bt 2x/ 1 × 3 + 2x/ 3 x 5 + 2x / 5 x 7 +...+2x/2011×2013
B1: Tìm x:
1/ \(\dfrac{x+3}{15}\) = \(\dfrac{1}{3}\) - \(\dfrac{1}{15}\)
2/ (2x - 5) = (x - 3) = 0
3/ (3x - 4) - (2x - 5) = 3
4/ (2x + 1) x (\(\dfrac{1}{2}\)x - 1) = 0
A)Tìm số nguyên x,y:
(2x-1) . (y-2)=12
B) Tìm x nguyên để biểu thức nguyên:
a) 3 / 2x-1
b) 5 / 2x+1
c) -7 / x-3
d) x-7 / x+2
e) 2x +5 / x-3
1,Tìm x
5^x-5^x+2=650
2x-3/11+2x-4/12+2x-5/13=2x-6/14+2x-7/15+2x-8/6
Tìm số nguyên x
a)(2x+5)÷(2x+1)
b)(3x+5)÷(x+1)
c)(3x+8)÷(x-1)
d)(5x+12)÷(x-2)
e)(7x-12)÷(x+16)
tìm x
a)5^2x . 5 = 3125
b)5^x 5^x+3 =630
c)3^2x + 1 = 243
d) 3^2x+1 = 9
Tìm x
a) 5^2x . 5 =3125
b)5^x + 5^x+3= 630
c)3^2x+1=243
d)3^2x+1=9
Bài tập: Tìm x, biết:
a) (x - 5) x (x - 7) = 0
b) (2x + 1) x (2x + 1) x 2x = 2028
Tìm số tự nhiên x , biết:
a) 36 : x - 5 = 2 2
b) 3 . 70 - x + 5 : 2 = 46
c) 450 : 41 - 2 x - 5 = 3 2 . 5
d) 230 + 2 4 + x - 5 = 315 . 2018 0
e) 2 x + 2 x + 1 = 48
f) 3 x + 1 + 3 x = 2430
tìm x , biết :
a, (x-1/5).(x-1+3/5)<0
b,(x-4/7):(x+1/2)>0
c,(2x-3):(x+1+3/4)
d,|2x-1|+1=2x