a/ 99x+(1+2+...+99)=0
99x+(1+99)x49,5=0
x=5
b/3x-1-2-3+1+2+3+4+...+10=0
3x+4+5+...+10=0
x=-49/3
a/ 99x+(1+2+...+99)=0
99x+(1+99)x49,5=0
x=5
b/3x-1-2-3+1+2+3+4+...+10=0
3x+4+5+...+10=0
x=-49/3
tìm x
a)(x+1)+(x+3)+(x+5)+...+(x+99)=0
b)(x-3)+(x-2)+(x-1)+...+10+11=11
1.tìm x,y biết
a, x.(y-3)≥0
b, (2.x-1).(y-1)≤0
c,(x-1).(2.k+1)≥0
2. tìm x,y ϵ Z biết
a, x(x+3)=0
b,(x-2).(5-x)=0
c,(x-1).(x^2+1)=0
d, x.y+3.x-7.y=21
e,x.y+3.x-2y=11
Tìm x thuộc Z:
a)(x+1)+(x+3)+(x+5)+.....+(x+99)=0
b)(x-3)+(x-2)+(x-1)+.....+10+11=11
a) ( x + 1) + ( x + 3) + ( x + 5 ) + …+ ( x + 99) = 0;
b) ( x – 3) + ( x - 2) + ( x – 1 ) + …+ 10 + 11 = 11;
c) x x x 1 2 ... 2018 2019 2019 ;
Tìm x thuộc Z:
a,(x+1)+(x+3)+(x+5)+...+(x+99)=0
b,(x-3)+(x-2)+(x-1)+...+10+11=11
Tìm x thuộc Z biết:
a, (x+1)+(x+3)+(x+5)+...+(x+99) = 0
b, (x-3)+(x-2)+(x-1)+...+10+11 = 11
a,(x+1)+(x+3)+(x+5)+...+(x+99)=0
b,(x-3)+(x-2)+(x-1)+...+10+11=11
ai nhanh tick cho
a,(x+1)+(x+3)+(x+5)+...+(x+99)=0
b,(x-3)+(x-2)+(x-1)+...+10+11=11
ai nhanh tick cho
a, ( x+1)+ (x+3)+(x+5) +...+(x+99)= 0
b, (x-3) + ( x-2)+ ( x-1)+ ...+ 10+11 =0