so nguyen x thoa man x-/-47\=-55-35 a
tim so nguyen x thoa man : -x - 47 + 37 = 0
-x - 47 + 37 = 0
-x - 10 = 0
-x = 10
x = -10
Ông DO THANH CONG cứ kêu khó vào mà câu tick!!!
so nguyen x thoa man 55-(6-x)=15-(-6) x bang
55 - (6 - x) = 15 - (-6)
=> 55 - 6 + x = 15 + 6
=> x = 15 + 6 + 6 - 55
=> x = -28
a, co bao nhieu cap so nguyen ( x,y ) thoa man x + y=1
b. co bao nhieu cap so nguyen ( x,y ) thoa man x.2 + y =1
cho x la so nguyen thoa man : -7/25<x/30<-1/5. so gia tri cua x thoa man la
-7/25<x/30<-1/5
quy đồng mẫu
=>(-42/150)<(5x/150)<(-30/150)
vậy số giá trị là 11
Cho x;y la so nguyen sao cho | x | + | y | = 5. So cap so nguyen ( x;y ) thoa man la
Tim 3 so nguyen to lien tiep x,y,z (x<y<z) thoa man A = x^2 + y^2 + z^2 la so nguyen to
Tim so nguyen x thoa man : A=14-x/4-x dat GTLN
a)Tim tat ca cac so nguyen duong x, y , z thoa man: \(\frac{x+y\sqrt{2013}}{y+z\sqrt{2013}}\)la so huu ti, dong thoi x2 + y2+ z2 la so nguyen to.
b) Tim so tu nhien x, y thoa man: x(1+x+x2) = y(y-1).
so nguyen duong x thoa man x^5=x^12
Ta có : x5 = x12
=> x5 - x12 = 0
x5 ( 1 - x7 ) = 0
=> x5 = 0 hoặc 1 - x7 = 0
+ Nếu x5 = 0 => x = 0
+ Nếu 1 - x7 = 0
=> x7 = 1 = 17
=> x = 1
Vậy : x thuộc { 0 ; 1 }