\(+)\left(x-1\right)\cdot\left(x+3\right)< 0\)
\(\Rightarrow\hept{\begin{cases}x-1< 0\\x+3>0\end{cases}\left(x-1< x+3\right)\Rightarrow\hept{\begin{cases}x< 1\\x>-3\end{cases}}}\)
Vậy \(-3< x< 1\)thì (x-1)(x+3)<0
Bt1 tìm x
a) (3/x+1/5).(x-1/2)=0
b)(x-3/2).(2x+1)>0
c)(x-2).(x-4)<0
d)(3x+1/5).(2x-1)<0
e)(x-1).(3x-5)<0
Tìm x
(3^2-2^3)x+3^2.2^2=4^2.3
x^5-x^3=0
(x-1)^2+(-3)^2=5^2.(-1)^100
(2x-1)^2-(2x-1)=0
Bài 1 : tìm số hữu tỉ x
1, (3 .x + 1/5) . ( x - 1/2 ) = 0
2, ( x - 3/2 ) . (2 .x +1 ) > 0
3, (2 - x ) . ( 4 /5 -x ) < 0
Bài 1 : Tìm x
a) 2/3 - 1/3 (x-3/2)-1/2(2x+1)=5
b) (x+1/2)(X-3/4)=0
c) 1/3 x + 3/5 (x+1)=0
d)x-8/2 > 0
e) x:(2/9 - 1/5 )=1/2
g) 1/3 + 1/2 : x = 1/5
Nhanh Nha
Tìm x,y nguyên:
1) (2x-1).(2x-5)<0
2) (3x+1).(5-2x)>0
3) (3-2x).(x+2)>0
4) (2-x).(x+1)=|y+1|
5) (x+3).(1-x)=|y|
6) (x-2).(5-x)=|2y+1|+2
7)(x-3).(x-5)+|y-2|=0
8) (x-2).(5-x)-|y+1|=1
GIÚP MK VS MK TICK CHO
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Bài 1: Tìm x:
a) (x-1) . (x+2) > 0
b) (x-1/3) . (x+2/5) > 0
c) (x+3/5) . (-x) < 0
|x+3| + |x-y| =0
|x-1| + (y-2)2 =0
|x-3| + |x-2y+1| =0
|x-2| + |3x .y-5| =0
|x-2| - 3|2-x| =-10
|x-3|+ |x-y+1|=0
|x-1| + (y+5)2020 =0
tìm x sao cho
1)1-2x<7
2) (x-1)(x-2)>0
3)(x-2)2(x+1)(x-4)<0
4)5/x <1
5) x2(x-3)/x-9<0
a) 5/2 - x + 4/5 = 2/3 + 4/7
b) ( x - 1 ) x ( x + 2 )< 0
c) ( x + 3/5 ) x ( x+ 1 )<0
d) ( x - 1/3 ) x ( x + 2/5 )>0
