Giai phuong trinh sau:5x^4-2 x^2 +3x^2√x^2 +2=4
giai cac phuong trinh va bat phuong trinh sau:
2(x-1)-5=3(5-3x)
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 )
giai phuong trinh
a) \(\sqrt{3x^2-7x+3}-\sqrt{x^2-2}=\sqrt{3x^2-5x-1}-\sqrt{x^2-3x+4}\)
b) x2 - 25 = y ( y + 6 ) (x; y nguyên)
Giai phuong trinh :
7x^2 - 13x + 2 = 0
3x^2 + 5x + 60 = 0
GIAI PHUONG TRINH
CAN 1+3x =X-1
Giai phuong trinh \(x\sqrt{x^2-x+1}+2\sqrt{3x+1}=x^2+x+3\)
Giai phuong trinh ; 2\(\sqrt{x^2-x}-2\sqrt{x}\sqrt{2x-1}+3x=1\)
giai phuong trinh:\(\sqrt{4x^2+5x+1}\) -2\(\sqrt{x^2-x-1}\)=3-9x
