\(\frac{3x^2-6x+1}{x-2}=\frac{3x\left(x-2\right)+1}{x-2}=3x+\frac{1}{x-2}\)
Vì \(x\inℤ\)\(\Rightarrow3x\inℤ\)
\(\Rightarrow\)Để \(\frac{3x^2-6x+1}{x-2}\inℤ\)thì \(\frac{1}{x-2}\inℤ\)
\(\Rightarrow1⋮x-2\)\(\Rightarrow x-2\inƯ\left(1\right)=\left\{-1;1\right\}\)
\(\Rightarrow x\in\left\{1;3\right\}\)
Vậy \(x\in\left\{1;3\right\}\)
tim x thuoc Z de A thuoc Z va tim gia tri do A=\(\frac{1-2x}{x+3}\)
Tim x thuoc Z de bieu thuc Q=\(\frac{4x-3}{3x+1}\)
Tim x thuoc q de 3/x-2 thuoc z
tim x thuoc Z de A thuoc Z:
A=1-2x/x-3
Tim x thuoc Z de bieu thuc sau day dat gia tri lon nhat :
B= 2015x+1/2016x-2016 (x thuoc Z; x khac 1)
A=√x-5/√x+3.tim x thuoc Z de A thuoc Z
giúp tôi với
tim x thuoc Z de A thuoc Z
a) A=\(\frac{x+3}{x-2}\) b) A =\(\frac{1-2x}{x+3}\)
TIM X THUOC Z
/3X-4/=/X+2/
Cho A =6 phan can x+2
a) tinh gia tri A tai x=0,9,4 phan 25
b) tim x =? De :
1)A= 1 phan 2
2) A nho hon 3
c) tim x thuoc z de A thuoc z
