Giải các pt sau
|2x-2|=x²-5x+6
|X-2|=3x²-x-2
|2x²-5x+5|=|x²+6x+5|
X²-2|x-2|-4=0
4x²+|2x-1|=4x+11
|X²-1|+4x=1
|2x²-5x+4|=2x-1
3x²+x-4|x+2|+8=0
giải các phương trình và hệ phương trình sau
1 , 4 ( x + 5 ) ( x + 6 ) ( x + 10 ) ( x + 12 ) = 3x2
2 , ( 2x - 1 ) ( 4x + 5 ) ( 8x + 3 ) ( 16x - 15 ) = 99x2
3 ,( x - 1 ) ( x - 2 ) ( x - 4 ) ( x - 8 ) =\(\frac{10}{9}\) x2
4, \(\frac{3x}{x^2-x+4}\) + \(\frac{x}{2x^2-6x+8}\) = 1
5 , \(\frac{3x}{x^2-4x+1}\) - \(\frac{2x}{x^2+x+1}\) = \(\frac{8}{3}\)
6, \(\frac{3x}{x^2-3x+1}\) + \(\frac{7x}{x^2+x+1}\) = -4
7, \(\frac{4x}{4x^2-8x+7}\) + \(\frac{3x}{4x^2-10x+7}\)= 1
8, \(\frac{2x}{x^2-3x+1}\) + \(\frac{7x}{x^2+x+1}\) = 6
9, \(\frac{x^2-10x+15}{x^2-6x+15}\) - \(\frac{4x}{x^2-12x+15}\)= 2
Giải các phương trình :
a. \(\dfrac{x^2+3x+2}{2x+3}=\dfrac{2x-5}{4}\)
b. \(\dfrac{2x+3}{x-3}-\dfrac{4}{x+3}=\dfrac{24}{x^2-9}+2\)
c. \(\sqrt{3x-5}=3\)
d. \(\sqrt{2x+5}=2\)
Giải phương trình :
\(\left(\frac{8}{3}\right)^{x^2-x+1}\left(\frac{3}{5}\right)^{2x^2-3x+2}\left(\frac{5}{7}\right)^{3x^2-4x+3}\left(\frac{7}{2}\right)^{4x^2-5x+4}=210^{\left(x-1\right)^2}\)
Giải các phương trình :
a) \(\sqrt{3x-4}=x-3\)
b) \(\sqrt{x^2-2x+3}=2x-1\)
c) \(\sqrt{2x^2+3x+7}=x+2\)
d) \(\sqrt{3x^2-4x-4}=\sqrt{2x+5}\)
1. | x^3 -8| > 2-x
2. | x^2 -3x +2| >= | x^2 +3x +2|
3. | (x^2 -4x)/x^2 + x+2| <=1
4. | ( x^2-5x+4)/ x^2-4 | <= 1
5. | 1-2/x^2| >= x^2
6. | (2-3|x| )/ 1+x) <= 1.
1)(x+4).(x+1)-3\(\sqrt{x^2+5x+2}\)=6
2)(\(^{x^2}\)+5x+4)\(\sqrt{x+3}\)=0
3)\(\left\{{}\begin{matrix}x-y=1\\x^2-xy+y^2=7\end{matrix}\right.\)
4)(x+1)\(\sqrt{x^2-2x+3}\)=\(^{x^2}\)+1
5)\(\left|4x+7\right|\)-2x-5=0
6)\(\sqrt{5x-1}\)=\(\sqrt{x}\)+4x-1
7)\(\sqrt{x^2+x-12}\)=8-x
8)\(\sqrt{x^2+2x+4}\)=\(\sqrt{2-x}\)
mn giải hộ tôi mới..
x^4+3x^3-2x^2+3X+1=0
x^4-2x^3-5x^2+2x+1=0
|x+5|=3x+1
2x+7/3+7.x-2/4=2
