a) x + 7 ⋮ x + 2
b) 2x + 5 ⋮ x + 1
c) 3x - 2 ⋮ x + 3
d) 12x + 1 ⋮ 3x + 2
e) x2 + 3x + 5 ⋮ x + 3
f) X2 - 2x + 3 ⋮ x + 2
a) x+ 3/4 =1
b) 1/2. x + 5 = -1
c) 3/4 : (2/3.x +-1/5)=6
d) -5/6 . 120/25<x<-7/15 . 9/14 với x thuộc z
a) -2x - (-17)= 9 b) 11 + (15 – x) = 1
c) 53 – 7x = 57 : 55 e) | d) 29 +9.x2 = 110 g) 2x + 1 chia hết cho x -2 |
(2 4) (3 ) 0 x x - - =
a) -2x - (-17)= 9 b) 11 + (15 – x) = 1
c) 53 – 7x = 57 : 55 | d) 29 +9.x2 = 110 |
e) (2x-4).(3-x) = 0
g) 2x + 1 chia hết cho x -2 |
a) -2x - (-17)= 9 b) 11 + (15 – x) = 1
c) 53 – 7x = 57 : 55 |
b) 11 + (15 – x) = 1
d) 29 +9.x2 = 110
e) (2x-4).(3-x) = 0
g) 2x + 1 chia hết cho x -2
Tìm x, y ∈ Z biết
a) (x + 1)(y – 2) = 0
b) (x – 5)(y – 7) = 1
c) (x + 4)(y – 2) = 2
d) (x + 3)(y – 6) = -4
e) (x + 7)(5 – y) = -6
f) (12 – x)(6 – y) = -2
mk cần gấp, giúp với nhé, mk sẽ tick cho ai làm sớm ^^
Tìm x,Biết
2.x+3=8
x:5-2=3
x:7-2=19
(x+3)x2=18
20-(x+3)=5
Tìm x∈Z, biết:
a)x.(x-6)=0
b)(-7-x).(-x+5)=0
c)(x+3).(x-7)=0
d)(x-3).(x2+12)=0
e)(x+1).(2-x) ≥0
f)(x-3).(x-5) ≤0
Tìm x, biết:
a) (x - 7):5 = 0;
b) x : 3 - 13 = 47
c) (x : 7 - 7) (x: 12 - 12) = 0;
d) 135 + x : 2 = 150
e) 140 - 100 : x = 120;
g) 300 - x : 5 = 273.
Tìm x, biết:
a) (x - 7):5 = 0; b) x : 3 - 13 = 47
c) (x : 7 - 7) (x: 12 - 12) = 0; d) 135 + x : 2 = 150
e) 140 - 100 : x = 120; g) 300 - x : 5 = 273