tim so nguyen a de : a^2 + 5a +4 / a + 5 la mot so nguyen
tim gia tri nguyen cua x de bieu thuc:x^2+7/x+1 cung nhan gia tri la so nguyen
Cho don thuc A= -xy2 , B=5xy3z, C=5xy2
a, Tim cac so nguyen x de bieu thuc M= \(\dfrac{3}{7-x}\) dat gia tri lon nhat
Tim n de bieu thuc sau la so nguyen : P = \(\dfrac{3n+2}{n-1}\)
cho x, y la cac so nguyen duong sao cho A = x^4 + y^4 / 15 cung la so nguyen duong . cmr : x va y deu chia het cho 3 va 5 , tu do tim gtnn cua A
tap hop cac so nguyen a de a^2+a+3/a+1 la so nguyen la
so nguyen a de 3/7-3a la so tu nhien a la
Tim gia tri nho nhat cua bieu thuc A = \(|2x-2|\) + \(|2x-2013|\) voi x la so nguyen !?!?
Cho A =\(\dfrac{\sqrt{x-3}}{2}\). Tìm x thuộc Z và x < 30 để A có giá trị nguyen