tim cac so tu nhien x,y de (2x+y)^4+(x+y)^4+(x+2y)^4 la so chinh phuong
tim x nguyen duong de 4x^3+14x^2+9x-6 la so chinh phuong
tim so tu nhien n de n(n+3) la so chinh phuong
tim n de cac so sau la so chinh phuong 9 + 2n ; 15 + 2n
Cho phuong trinh x2 + (m-2)x -8 =0 voi m la tham so
tim tat ca cac gia tri cua m de phuong trinh co 2 nghiem x1 , x2 sao cho A= (x12 -1)(x22 -4) dat GTLN
HELP ME !!!
tim x nguyen de
\(A=\frac{x-3}{4x+6}\) la binh phuong cua mot phan so
Tim n \(\in\)N de \(n^2+17\)la so chinh phuong
tim n thuoc N sao cho 3^n +n^2 la so chinh phuong n >1
tim m de phuong trinh sau co nghiem kep roi tim nghiem kep do
a) x^2 -mx-4=0
b)x^2 -2(m-4)x +m^2 +m +3 = 0