Giải các pt sau:\(\dfrac{x+1}{2009}+\dfrac{x+3}{2007}=\dfrac{x+5}{2005}+\dfrac{x+7}{1993}\)
Giải phương trình: \(\dfrac{x+10}{2003}+\dfrac{x+6}{2007}+\dfrac{x+12}{2001}+3=0\)
a). \(C=\dfrac{x^4+x^8+x^{12}+x^{16}+x^{20}+x^{24}+x^{28}+1}{x^3+x^7+x^{11}+x^{15}+x^{19}+x^{23}+x^{27}+x^{31}}\)
b). \(F=\dfrac{1}{1.2.3.4}+\dfrac{1}{2.3.4.5}+\dfrac{1}{3.4.5.6}+...+\dfrac{1}{2011.2012.2013.2014}\)
c). \(\dfrac{14044}{12345}=1+\dfrac{1}{7+\dfrac{1}{8+\dfrac{1}{9+\dfrac{1}{x+\dfrac{1}{y}}}}}\)
Giải các pt sau:
a.\(\dfrac{2-x}{2002}-1=\dfrac{1-x}{2003}-\dfrac{x}{2004}\)
b.\(\dfrac{x^2-10x-29}{1971}+\dfrac{x^2-10x-27}{1973}=\dfrac{x^2-10x-1971}{29}=\dfrac{x^2-10x-1973}{27}\)
Bài 1:Giải các pt chứa ẩn ở mẫu sau:
a) \(\dfrac{2x+1}{x-1}=\dfrac{5\left(x-1\right)}{x+1}\) b) \(\dfrac{x+3}{x+1}+\dfrac{x-2}{x}=2\) c)\(\dfrac{x-2}{2+x}-\dfrac{3}{x-2}=\dfrac{2\left(x-11\right)}{x^2-4}\)
d)\(\dfrac{x+1}{x-2}-\dfrac{x-1}{x+2}=\dfrac{2\left(x^2+2\right)}{x^2-4}\) e)\(\dfrac{x+1}{x-1}-\dfrac{x-1}{x+1}=\dfrac{4}{x^2-1}\) g)\(\dfrac{x-1}{x+2}-\dfrac{x}{x-2}=\dfrac{5x-2}{4-x^2}\)
h)\(\dfrac{1}{x+1}-\dfrac{5}{x-2}=\dfrac{15}{\left(x+1\right)\left(2-x\right)}\) j)\(\dfrac{3}{4\left(x-5\right)}+\dfrac{15}{50-2x^2}=\dfrac{7}{6\left(x+5\right)}\) k)\(\dfrac{x+2}{x-2}-\dfrac{1}{x}=\dfrac{2}{x\left(x-2\right)}\)
n)\(1+\dfrac{x}{3-x}=\dfrac{5x}{\left(x+2\right)\left(3-x\right)}+\dfrac{2}{x+2}\)
Câu 1:tìm giá trị của m biết rằng x = 5 là nghiệm của phương trình:
2x + m2 ( x - 1) = 19
Câu 2:giải phương trình: \(\dfrac{x+5}{1999}\) + \(\dfrac{x+7}{1997}\) = \(\dfrac{x+9}{1999}\)+\(\dfrac{x+11}{1993}\)
Giải phương trình:
\(\dfrac{x-2005}{9}+\dfrac{4x-8030}{19}=\dfrac{2x-4004}{24}+\dfrac{3x-6022}{20}\)
4(x+5)-3|2x-1|=0
\(\dfrac{2-x}{2007}-1=\dfrac{1-x}{2008}-\dfrac{x}{2009}\)
x4+4x2-5=0
Bài 1: GPT
a) \(\dfrac{x+2}{x-2}-\dfrac{x-2}{x+2}=\dfrac{4x^2}{x^2-4}\)
b) \(\dfrac{6}{x-1}-\dfrac{4}{x-3}=\dfrac{8}{\left(x-1\right)\left(x-3\right)}\)
c)\(\dfrac{x+3}{x-3}-\dfrac{48}{x^2-9}=\dfrac{x-3}{x+3}\)
