giải phương trình
, \(\frac{x^2-13x+15}{x^2-14x+15}+\frac{x^2-15x+15}{x^2-163x+16}=\frac{1}{12}\)
, \(x^2+\frac{25x^2}{x^2+10x+25}=11\)
tim x,y nguyen biet x^2-2xy+3=0
Phương trình bậc cao
1/ 2X^3 + X +3 = 0
2/X + 3 căn 3X^2 + 7X -căn 3 =0
3/ 2X^3 +7X^2 -28X +12 =0
4/ 6X^3 -X^2 +14X +5 =0
tim x biet (2-x)(4-x)-5=0
Tìm x, biết:
a)\(\sqrt{4-5x}=12\)
b)\(\sqrt{x^2-14x+49}\)\(-3x=1\)
c)\(\sqrt{9x-9}\)+\(2\sqrt{16x-16}\)\(-\frac{1}{3}\sqrt{25x-25}\)\(=\sqrt{x-1}\)
tim a=2x+3y+z biet (x-1)^2+(y-3)^4-z^6=0
tim x,y biet : x^2+y^2-2xy-4=0
tim x nguyen duong de 4x^3+14x^2+9x-6 la so chinh phuong
tim x biet \(5\sqrt{x}-3+2x=0\)