giai phuong trinh nghiem nguyen : x^2+x=y^4+y^3+y^2+y
giai phuong trinh nghiem nguyen 8x2-7x+-13= y(x-1)2
Giai phuong trinh nghiem nguyen
x2-xy+y2=x2y2-5
giai giup minh bai phuong trinh nghiem nguyen nay voi
x2+x=y2-19
x2+14xy+5y2=169
tim tat ca cac nghiem nguyen (x, y) cua phuong trinh x*3+y*3=(x+y)²
Tim nghiem nguyen cua phuong trinh x^2 - xy + y^2 - 4 = 0
Ai giải dc cảm ơn
a) Cho phuong trinh x2 +mx+1=0. Tim dieu kien cua m de phuong trinh co nghiem kep. Tinh nghiem kep do
b) Khong giai phuong trinh, chung to phuong trinh 2x2 - 3x - 5 = 0co 2 nghiem phan biet x1 , x2. Tinh ( x1 - x2 )
1)Giai phuong trinh:
a) x4+4x2-5=0
b)Cho phuong trinh: x2-2(m+1)x+m2+3m-4=0(1)
Giai phuong trinh khi m=2Chung minh phuong trinh luon co nghiem voi moi m.Goi x1,x2 la nghiem cua phuong trinh,tim m de thoa man dieu kien:x12+x22=10help me!
tim nghiem nguyen cua phuong trinh x^3 +(x+1)^3+(x+2)^3=(x+3)^3