8x3 - 4x - 1 = 0
(2x + 1)(4x2 - 2x - 1) = 0
8x3 - 4x - 1 = 0
(2x + 1)(4x2 - 2x - 1) = 0
Giải phương trình:
1. \(x^4-6x^2-12x-8=0\)
2. \(\dfrac{x}{2x^2+4x+1}+\dfrac{x}{2x^2-4x+1}=\dfrac{3}{5}\)
3. \(x^4-x^3-8x^2+9x-9+\left(x^2-x+1\right)\sqrt{x+9}=0\)
4. \(2x^2.\sqrt{-4x^4+4x^2+3}=4x^4+1\)
5. \(x^2+4x+3=\sqrt{\dfrac{x}{8}+\dfrac{1}{2}}\)
6. \(\left\{{}\begin{matrix}4x^3+xy^2=3x-y\\4xy+y^2=2\end{matrix}\right.\)
7. \(\left\{{}\begin{matrix}\sqrt{x^2-3y}\left(2x+y+1\right)+2x+y-5=0\\5x^2+y^2+4xy-3y-5=0\end{matrix}\right.\)
8. \(\left\{{}\begin{matrix}\sqrt{2x^2+2}+\left(x^2+1\right)^2+2y-10=0\\\left(x^2+1\right)^2+x^2y\left(y-4\right)=0\end{matrix}\right.\)
\(8x^4-8x^3-4x^2+3x+1=0\). giải phương trình
\(a,2x^2-9x+3+\sqrt{3x^2-7x+1}=0\)
b)\(\sqrt{x+2}+\sqrt{3-x}=x^3+x^2-4x-1\)
c)\(\text{4x^3-9x^2+7x-(3x-1)\sqrt{3x-2}=0}\)
d)\(2\sqrt{x-1}+\sqrt{5x-1}=x^2+1\)
e)\(\sqrt{x+2}+\sqrt{5x+6}+2\sqrt{8x+9}=4x^2\)
f)\(3x^2-x+3=\sqrt{3x+1}+\sqrt{5x+4}\)
Giải pt
x^4-4x^2+8x+4=0
Giải các phương trình sau :
a, x3 - 5x2 + 8x - 4 = 0
b, x4 - 4x2 + 12x - 9 = 0
c, ( x + 1 ) . ( x + 2 ) . ( x + 3 ) . ( x + 4 ) = 24
a) 3x3 +2x2 - 2x -1 =0
b) x4 + 4x3 + 3x2 + 2x -1 =0
c) x3 - 6x2 + 7x + 2 =0
d) 2x4 + x3 - 8x2 - x + 6 =0
giúp mk vs
giải pt sau \(3-6x\sqrt{x^2-4x+1}=9x^2-8x\)
Giải các phương trình sau:
a, \(\sqrt{4x-1}+4x^2-6x+1=0\)
b, \(\sqrt{3x^2-2x+9}+\sqrt{3x^2-2x+2}=7\)
c,\(3\sqrt{x}+8=9x+\frac{1}{x}+\frac{1}{\sqrt{x}}\)
d, \(\frac{2x^2+8x+1}{2x+1}=5\sqrt{x}\)
\(\begin{cases}\left(4x^2+1\right)x+\left(y-3\right)\sqrt{5-2y}=0\\4x^2+y^2+2\sqrt{3-4x}=7\end{cases}\)