Bài 5: Phương trình chứa ẩn ở mẫu
Các câu hỏi tương tự
Giải các phương trình :
a) dfrac{1}{x-1}-dfrac{3x^2}{x^3-1}dfrac{2x}{x^2+x+1}
b) dfrac{3}{left(x-1right)left(x-2right)}+dfrac{2}{left(x-3right)left(x-1right)}dfrac{1}{left(x-2right)left(x-3right)}
c) 1+dfrac{1}{x+2}dfrac{12}{8+x^3}
d) dfrac{13}{left(x-3right)left(2x+7right)}+dfrac{1}{2x+7}dfrac{6}{left(x-3right)left(x+3right)}
Đọc tiếp
Giải các phương trình :
a) \(\dfrac{1}{x-1}-\dfrac{3x^2}{x^3-1}=\dfrac{2x}{x^2+x+1}\)
b) \(\dfrac{3}{\left(x-1\right)\left(x-2\right)}+\dfrac{2}{\left(x-3\right)\left(x-1\right)}=\dfrac{1}{\left(x-2\right)\left(x-3\right)}\)
c) \(1+\dfrac{1}{x+2}=\dfrac{12}{8+x^3}\)
d) \(\dfrac{13}{\left(x-3\right)\left(2x+7\right)}+\dfrac{1}{2x+7}=\dfrac{6}{\left(x-3\right)\left(x+3\right)}\)
Giải các phương trình sau :
a) dfrac{1-6x}{x-2}+dfrac{9x+4}{x+2}dfrac{xleft(3x-2+1right)}{x^2-4}
b) 1+dfrac{x}{3-x}dfrac{5x}{left(x+2right)left(3-xright)}+dfrac{2}{x+2}
c) dfrac{2}{x-1}+dfrac{2x+3}{x^2+x+1}dfrac{left(2x-1right)left(2x+1right)}{x^3-1}
d) dfrac{x^3-left(x-1right)^3}{left(4x+3right)left(x-5right)}dfrac{7x-1}{4x+3}-dfrac{x}{x-5}
Đọc tiếp
Giải các phương trình sau :
a) \(\dfrac{1-6x}{x-2}+\dfrac{9x+4}{x+2}=\dfrac{x\left(3x-2+1\right)}{x^2-4}\)
b) \(1+\dfrac{x}{3-x}=\dfrac{5x}{\left(x+2\right)\left(3-x\right)}+\dfrac{2}{x+2}\)
c) \(\dfrac{2}{x-1}+\dfrac{2x+3}{x^2+x+1}=\dfrac{\left(2x-1\right)\left(2x+1\right)}{x^3-1}\)
d) \(\dfrac{x^3-\left(x-1\right)^3}{\left(4x+3\right)\left(x-5\right)}=\dfrac{7x-1}{4x+3}-\dfrac{x}{x-5}\)
Giải các phương trình sau :
a) \(\dfrac{1-x}{x+1}+3=\dfrac{2x+3}{x+1}\)
b) \(\dfrac{\left(x+2\right)^2}{2x-3}-1=\dfrac{x^2+10}{2x-3}\)
c) \(\dfrac{5x-2}{2-2x}+\dfrac{2x-1}{2}=1-\dfrac{x^2+x-3}{1-x}\)
d) \(\dfrac{5-2x}{3}+\dfrac{\left(x-1\right)\left(x+1\right)}{3x-1}=\dfrac{\left(x+2\right)\left(1-3x\right)}{9x-3}\)
Giải phương trình:
a/ \(1+\dfrac{x}{3-x}=\dfrac{5x}{\left(x+2\right)\left(x+3\right)}+\dfrac{2}{x+2}\)
b/ \(\dfrac{x+2}{x-2}-\dfrac{2}{x^2-2x}=\dfrac{1}{x}\)
c/ \(\dfrac{x}{2x+2}-\dfrac{2x}{x^2-2x-3}=\dfrac{2}{6-2x}\)
d/ \(\dfrac{5}{-x^2+5x-6}+\dfrac{x+3}{2-x}=0\)
Giải các phương trình sau:
a) \(\dfrac{1}{x^2-2x+2}\) + \(\dfrac{2}{x^2-2x+3}\) = \(\dfrac{6}{x^2-2x+4}\)
b) \(\dfrac{x^2+2x+7}{\left(x+1\right)^2+2}\) = x2 + 2x + 4
Bt: Giải các pt sau:
a, dfrac{x+3}{x+1} + dfrac{x-2}{x}dfrac{2left(x^2+x-1right)}{xleft(x+1right)}
b, dfrac{2}{x-2}-dfrac{x}{x+3}dfrac{5x}{left(x-2right)left(x+3right)}-1
c, dfrac{1}{x^2+x+1}-dfrac{1}{x^2-x+1}dfrac{1-2x}{x^4+x^2+1}
d, dfrac{3x-1}{x-1}-dfrac{2x+5}{x+3}+dfrac{4}{x^2+2x-3}1
e, left(x+1right)left(x+2right)left(x+4right)left(x+5right)40
Đọc tiếp
Bt: Giải các pt sau:
a, \(\dfrac{x+3}{x+1}\) + \(\dfrac{x-2}{x}\)=\(\dfrac{2\left(x^2+x-1\right)}{x\left(x+1\right)}\)
b, \(\dfrac{2}{x-2}-\dfrac{x}{x+3}=\dfrac{5x}{\left(x-2\right)\left(x+3\right)}-1\)
c, \(\dfrac{1}{x^2+x+1}-\dfrac{1}{x^2-x+1}=\dfrac{1-2x}{x^4+x^2+1}\)
d, \(\dfrac{3x-1}{x-1}-\dfrac{2x+5}{x+3}+\dfrac{4}{x^2+2x-3}=1\)
e, \(\left(x+1\right)\left(x+2\right)\left(x+4\right)\left(x+5\right)=40\)
Giải phương trình sau:
a. dfrac{6x+1}{x^2-7x+10}+dfrac{5}{x-2}dfrac{3}{x-5}
b. dfrac{2}{x^2-4}-dfrac{x-1}{xleft(x-2right)}+dfrac{x-4}{xleft(x+2right)}0
c. dfrac{1}{3-x}-dfrac{1}{x+1}dfrac{x}{x-3}-dfrac{left(x-1right)^2}{x^2-2x-3}
d. dfrac{1}{x-2}-dfrac{6}{x+3}dfrac{5}{6-x^2-x}
e. dfrac{2}{x+2}-dfrac{2x^2+16}{x^3+8}dfrac{5}{x^2-2x-3}
f. dfrac{x+1}{x^2+x+1}-dfrac{x-1}{x^2-x+1}dfrac{2left(x+2right)^2}{x^6-1}
m.n jup vs mai kt r
Đọc tiếp
Giải phương trình sau:
a. \(\dfrac{6x+1}{x^2-7x+10}+\dfrac{5}{x-2}=\dfrac{3}{x-5}\)
b. \(\dfrac{2}{x^2-4}-\dfrac{x-1}{x\left(x-2\right)}+\dfrac{x-4}{x\left(x+2\right)}=0\)
c. \(\dfrac{1}{3-x}-\dfrac{1}{x+1}=\dfrac{x}{x-3}-\dfrac{\left(x-1\right)^2}{x^2-2x-3}\)
d. \(\dfrac{1}{x-2}-\dfrac{6}{x+3}=\dfrac{5}{6-x^2-x}\)
e. \(\dfrac{2}{x+2}-\dfrac{2x^2+16}{x^3+8}=\dfrac{5}{x^2-2x-3}\)
f. \(\dfrac{x+1}{x^2+x+1}-\dfrac{x-1}{x^2-x+1}=\dfrac{2\left(x+2\right)^2}{x^6-1}\)
m.n jup vs mai kt r
1) dfrac{7x-3}{x-1} dfrac{2}{3}2) dfrac{2left(3-7xright)}{1+x} dfrac{1}{2}3) dfrac{x^{2^{ }}-6}{x} x + dfrac{3}{2}4) dfrac{5}{3x+2} 2x - 15) dfrac{left(x^2+2xright)-left(3x+6right)}{x-3} 06) dfrac{1}{x-2} + 3 dfrac{3-x}{x-2}
Đọc tiếp
1) \(\dfrac{7x-3}{x-1}\) = \(\dfrac{2}{3}\)
2) \(\dfrac{2\left(3-7x\right)}{1+x}\) = \(\dfrac{1}{2}\)
3) \(\dfrac{x^{2^{ }}-6}{x}\) = x + \(\dfrac{3}{2}\)
4) \(\dfrac{5}{3x+2}\) = 2x - 1
5) \(\dfrac{\left(x^2+2x\right)-\left(3x+6\right)}{x-3}\) = 0
6) \(\dfrac{1}{x-2}\) + 3 = \(\dfrac{3-x}{x-2}\)
\(a,\dfrac{3\left(2x+1\right)}{4}-5-\dfrac{3x+2}{10}=\dfrac{2\left(3x-1\right)}{5}\)
b,\(\dfrac{x-15}{23}+\dfrac{x-23}{15}-2=0\)
c,\(\dfrac{3\left(2x+1\right)}{4}-\dfrac{5x+3}{6}+\dfrac{x+1}{3}=x+\dfrac{7}{12}\)