\(\frac{x+3}{5x-1}\div\frac{x^2+3x}{1-5x}\) \(\left(x\ne0\right)\)
\(\Leftrightarrow\frac{-\left(x+3\right)\left(5x-1\right)}{\left(5x-1\right)x\left(x+3\right)}\)
\(\Leftrightarrow\frac{-1}{x}\)
Violympic toán 8
Các câu hỏi tương tự
bài 1 giải phương trình
frac{3x+2}{3x-2}-frac{6}{2+3x}frac{9x^2}{9x^2-4}
frac{3}{5x-1}+frac{3}{3-5x}frac{4}{left(1-5xright)left(5x-3right)}
frac{3}{1-4x}frac{2}{4x+1}-frac{8+6x}{16x^2-1}
frac{5-x}{4x^2-8x}+frac{7}{8x}frac{x-1}{2xleft(x-2right)}+frac{1}{8x-16}
frac{x+1}{x^2+x+1}-frac{x-1}{x^2-x+1}frac{3}{xleft(x^4+x^2+1right)}
Đọc tiếp
bài 1 giải phương trình
\(\frac{3x+2}{3x-2}-\frac{6}{2+3x}=\frac{9x^2}{9x^2-4}\)
\(\frac{3}{5x-1}+\frac{3}{3-5x}=\frac{4}{\left(1-5x\right)\left(5x-3\right)}\)
\(\frac{3}{1-4x}=\frac{2}{4x+1}-\frac{8+6x}{16x^2-1}\)
\(\frac{5-x}{4x^2-8x}+\frac{7}{8x}=\frac{x-1}{2x\left(x-2\right)}+\frac{1}{8x-16}\)
\(\frac{x+1}{x^2+x+1}-\frac{x-1}{x^2-x+1}=\frac{3}{x\left(x^4+x^2+1\right)}\)
1. giải phương trình
a, \(\frac{7x-3}{x-1}=\frac{2}{3}\)
b, \(\frac{2\left(3-7x\right)}{1+x}=\frac{1}{2}\)
c,\(\frac{5x-1}{3x+2}=\frac{5x-7}{3x-1}\)
d,\(\frac{4x+7}{x-1}=\frac{12x+5}{3x+4}\)
1 Giari các PT:
a, \(\frac{2}{x+1}-\frac{1}{x-2}=\frac{3x-11}{\left(x-1\right)\left(x-2\right)}\)
b, \(\left(\frac{3}{2x+1}+2\right)\left(5x-2\right)=\frac{5x-2}{2x+1}\)
Giải pt
\(\frac{x+3}{x-3}-\frac{1}{x}=\frac{5x-3}{3x-x^2}\)
Giải các phương trình
a) \(\frac{3x+2}{2}-\frac{3x+1}{6}=\frac{5}{3}+2x\)
b) \(\frac{4x+3}{5}-\frac{6x-2}{7}=\frac{5x+4}{3}+3\)
c) \(\frac{x+4}{5}-x+4=\frac{x}{3}-\frac{x-2}{2}\)
d) \(\frac{5x+2}{6}-\frac{8x-1}{3}=\frac{4x+2}{5}-5\)
bài 1 : thực hiện các phép tính
a. frac{4x-1}{3x^2y}-frac{7x-1}{3x^2y}
b.frac{4x+1}{2}-frac{3x+2}{3}
c.frac{5x^2-y^2}{xy}-frac{3x-2y}{y}
d.frac{3x}{5x+5y}-frac{x}{10x-10y}
e.frac{x+3}{x}-frac{x}{x-3}+frac{9}{x^2-3x}
f.frac{x+3}{x^2-1}-frac{1}{x^2+x}
g.frac{1}{3x-2}-frac{4}{3x+2}-frac{-10x+8}{9x^2-4}
h.frac{x+9y}{x^2-9y^2}-frac{3y}{x^2+3xy}
i.frac{3}{2x+6}-frac{x-6}{2x^2+6x}
Đọc tiếp
bài 1 : thực hiện các phép tính
a. \(\frac{4x-1}{3x^2y}-\frac{7x-1}{3x^2y}\)
b.\(\frac{4x+1}{2}-\frac{3x+2}{3}\)
c.\(\frac{5x^2-y^2}{xy}-\frac{3x-2y}{y}\)
d.\(\frac{3x}{5x+5y}-\frac{x}{10x-10y}\)
e.\(\frac{x+3}{x}-\frac{x}{x-3}+\frac{9}{x^2-3x}\)
f.\(\frac{x+3}{x^2-1}-\frac{1}{x^2+x}\)
g.\(\frac{1}{3x-2}-\frac{4}{3x+2}-\frac{-10x+8}{9x^2-4}\)
h.\(\frac{x+9y}{x^2-9y^2}-\frac{3y}{x^2+3xy}\)
i.\(\frac{3}{2x+6}-\frac{x-6}{2x^2+6x}\)
bài 1: Thực hiện các phép tính
a.frac{4x-1}{3x^2y}-frac{7x-2}{3x^2y}
b.frac{4x+1}{2}-frac{3x+2}{3}
c.frac{5x^2-y^2}{xy}-frac{3x-2y}{y}
d.frac{3x}{5x+5y}-frac{x}{10x-10y}
e. frac{x+3}{x}-frac{x}{x-3}+frac{9}{x^2-3x}
f..frac{x+3}{x^2-1}-frac{1}{x^2+x}
g. frac{1}{3x-2}-frac{4}{3x+2}-frac{-10x+8}{9x^2-4}
h.frac{x+9y}{x^2-9y^2}-frac{3y}{x^2+3xy}
i.frac{3}{2x+6}-frac{x-6}{2x^2+6x}
Đọc tiếp
bài 1: Thực hiện các phép tính
a.\(\frac{4x-1}{3x^2y}-\frac{7x-2}{3x^2y}\)
b.\(\frac{4x+1}{2}-\frac{3x+2}{3}\)
c.\(\frac{5x^2-y^2}{xy}-\frac{3x-2y}{y}\)
d.\(\frac{3x}{5x+5y}-\frac{x}{10x-10y}\)
e. \(\frac{x+3}{x}-\frac{x}{x-3}+\frac{9}{x^2-3x}\)
f..\(\frac{x+3}{x^2-1}-\frac{1}{x^2+x}\)
g. \(\frac{1}{3x-2}-\frac{4}{3x+2}-\frac{-10x+8}{9x^2-4}\)
h.\(\frac{x+9y}{x^2-9y^2}-\frac{3y}{x^2+3xy}\)
i.\(\frac{3}{2x+6}-\frac{x-6}{2x^2+6x}\)
Giair pt:
c, x ( 3x-1) (3x+1) (3x+2) =8
d, (x+1) (2x+3) (2x+5) (x+3)=45
e,x4+ 3x3 - 15x2 - 19x + 3 = 0
f, \(\frac{1}{x^2+x}+\frac{1}{x^2+3x+2}+\frac{1}{x^2+5x+6}+\frac{1}{x^2+7x+12}=\frac{1}{3}\)
h,\(\frac{1}{x^2+9x+20}+\frac{1}{x^2+11x+30}+\frac{1}{x^2+13x+42}=\frac{1}{18}\)
giải phương trình
a) \(\frac{3x}{5}+\frac{5x}{4}=3-\frac{2x}{3}\)
b) \(\frac{x-2}{3}+\frac{x-1}{4}=2-\frac{5\left(x-1\right)}{2}\)
c) \(\frac{x-7}{2}=3-\frac{1-3x}{3}\)