Là 736, cần ghi cách giải luôn không
Là 736, cần ghi cách giải luôn không
biet rang phuong trinh (x-3a+1)(3x+2a-5)=0 (a la tham so nguyen duong ) co mot nghiem x=1 . nghiem con lai cua phuong trinh la x=....
Tim ba so duong thoa man : \(2016\left(x-y\sqrt{2001}\right)=2015\left(y-\sqrt{2001}\right)\) va \(x^2+y^2+z^2\) la so nguyen to
Cho x,y,z la cac so duong va x+y+z=1. Tim GTNN cua M=xy+yz+zx
tim cac so nguyen x va y sao cho (x^2-x+1)(y^2+xy)=3x-1
Tim cac so nguyen x de biet thuc \(A=\dfrac{x^5+1}{x^3+1}\) co gt la so nguyen
tim x thuoc z de x-17/x-9 la binh phuong cua mot so huu ti
trong cac cau sau day, cau nao dung, cau nao sai? Cho vi du minh hoa doi vs cac cau sai:
a) Tong cua 2 so nguyen am la 1 so nguyen am.
b)Tong cua 2 so nguyen duong la 1 so nguyen duong
c)Tich cua 2 so nguyen am la 1 so nguyen am
d)Tong cua 2 so nguyen duong la 1 so nguyen duong
so tn n <20 de n^2+4n+2017 la so chinh phuong
neu 50x^2 +25x -3=(Ax+B)(Cx+D) va D=-1.
khiA,B,C la so nguyen thi P=(C/A-B)D^2017 bang bao nhieu ?
BAI2 : tinh a+b biet x^2009+2x^1009 +ax+b chia het cho x-1