Giai phuong trinh x^2+(1/x^2)+16y^2+(1/y^2)=10
giai phuong trinh nghiem nguyen:x^4+x^2-y^2-y+20=0
Giai phuong trinh nghiem nguyen sau
x^2 +y^2-x-y=8
Giai phuong trinh x2+ y22+z22=y(x+z)
giai phuong trinh x^2+y^2+6y+5=0
giai phuong trinh x2-xy+y2=3
cho phuong trinh ( a^2 - 2a -3)x + a^2 = 9. Giai phuong trinh theo tham so a
y^2-y=2 giai phuong trinh
cho phuong trinh an x: \(\frac{x+a}{x+2}+\frac{x-2}{x-a}=2\)
a) giai phuong trinh vs a=4
b)Tim cac gtri cua a sao cho phuong trinh nhan x=-1 lam nghiem
