tim x biet: ||x-1/2|.|2x-3/4||=2x-3/4
|(x+1/2).|2x-3/4||=2x-3/4 tim x biet
Tim cap so nguyen x,y thỏa mãn phương trình xy^2- (x-2)( x^4 +2x+1)=2y^2
Tim x
2 - /3/2x - 1/4/=/-5/4/
tim xy biết y+z +1/x =x+z+2/y=x+y-3/z=1/x+y+z
tim x
|9-7X|=5x-3
|17x-5|-|17x+5|=0
|3x+4|=2.|2x-9|
5^x+2=625
(x-1)^x+2=(x-1)6x+4
1 tim tông cua cac đa thưc sau
a P=x^2y+x^3+3và Q=x^3+xy^2-xy-6
b M=x^y+0,5xy^3-7,5x^3y^2+x^3và N=3xy^3-x^2y=5,5x^3y^2
Tìm x thuộc Z:
1 phần x+ 1 phần y= 1 phần 25
xy- 2x+ y- 2= 2
xy- 2x+ y- 2= -3
3xy+ 15- xngũ2 y- 5x= -1
Y= 3x+ 1trên x-3
5) (x– 5)(x – 1)= (x – 1)(x – 2)
6) 6(х - 3)(х — 4) - 6х(х — 2) = 4
7)-(x + 3)(x – 4) + (x + 1)(x – 1) = 10
8) (2x – 1)(x – 2) – (x + 3)(2x – 7) =3
9) (х - 5)(4 — х) — (х — 1)(х + 3) = -2x^2
10 (4x + 1)(x – 3) - (x- 7)(4x – 1)=15
11) (x + 1)(x² – x + 1) – x(x² – 3) = 4
12) (x – 3)(x² + 3x+9)+ x(5 – x²?) = 6x
13) (3x – 5)(x + 1)– (3x – 1)(x+ 1)=x - 4
14) 5(x – 3)(x – 7)– (5x+ 1)(x – 2)= 8
