Để N có giá trị nguyên thì \(9⋮\sqrt{x-5}\)
Ta có : \(\sqrt{x-5}\inƯ\left(9\right)=\left\{\pm1;\pm3;\pm9\right\}\)
\(\Rightarrow x-5\in\left\{1;9;81\right\}\)
\(\Rightarrow x\in\left\{6;14;86\right\}\)
Vậy \(x\in\left\{6;14;96\right\}\)thì N có giá trị nguyên
cho P=\(\frac{9}{\sqrt{x-5}}\). tim x thuoc Z de A co gia tri nguyen
cho A=\(\frac{\sqrt{x}+1}{\sqrt{x}-3}\)(x\(\ge\)0)
tim so nguyen de A co gia tri la so nguyen
Tim n de phan so sau co gia tri nguyen va tinh gia tri do:
A=3n+9/n-4
Cho so nguyen to n co 2 chu so hang chuc la x, hang don vi la y. Biet M=n/x+y. Tim n de M=2. Tim n de M dat gia tri nho nhat
Tim cac gia tri nguyen cua x de cac gia tri bieu thuc sau la so nguyen
a, 9-2x/x-3
b,3x-5/x-2
c,-3/4-x
tim gia tri nguyen cua x de bieu thuc 5-x/x-2 co gia tri nho nhat
B=\(\frac{5}{\sqrt{x}-1}\). Tim x thuoc Z de B co gia tri nguyen.
tim cac gia tri nguyen cua x de cac gia tri bieu thuc sau la so nguyen
a,9-2x/x-3
b,3x-5/x-2
c,-3/4-x
Cho bieu thuc \(A=\frac{5-X}{X-2}\) .Tim gia tri nguyen cua x de
a) A co gia tri nguyen .
b) A co gia tri nho nhat .
