rút gọn biểu thức

\(A_8=\left(1-\frac{1}{x+2}\right):\left(\frac{4-x^2}{x-6}-\frac{x-2}{3-x}-\frac{x-3}{x+2}\right)\)

\(A=\frac{y-x}{xy}:\left[\frac{y^2}{\left(x-y\right)^2\left(x+y\right)}-\frac{2x^2y}{x^4-2x^2y^2+y^4}+\frac{x^2}{\left(y^2-x^2\right)\left(x+y\right)}\right]\)

giải phương trình, tiếp

\(\left(x+1\right)^2=4\left(x^2-2x+1\right)^2\)

\(\left(2x+7\right)^2=9\left(x+2\right)^2\)

\(4\left(2x+7\right)^2=9\left(x+3\right)^2\)

\(\frac{1}{9}\left(x-3\right)^2-\frac{1}{25}\left(x+5\right)^2=0\)

\(2x^2-6x+1=0\)

\(3x^2+12x-66=0\)

\(9x^2-30x+225=0\)

\(3x^2-7x+1=0\)

\(3x^2-7x+8=0\)

\(x^2-4x+1=0\)

\(2x^2-6x+1=0\)

giải phương trình(tiếp)

\(\frac{5}{3x+2}=2x-1\)

\(\frac{x-45}{55}+\frac{x-47}{53}=\frac{x-55}{45}+\frac{x-53}{47}\)

\(\frac{2-x}{2002}-1=\frac{1-x}{2003}-\frac{x}{2004}\)

\(\frac{x^2-10x-29}{1971}+\frac{x^2-10x-27}{1973}=\frac{x^2-10x-1971}{29}+\frac{x^2-10x-1973}{27}\)

\(\frac{201-x}{99}+\frac{203-x}{97}=\frac{205-x}{95}+3\)

\(\frac{2x-\frac{4-3x}{5}}{15}=\frac{7x-\frac{x-3}{2}}{5}-x+1\)

\(\frac{\frac{1}{2}+a}{a-\frac{1}{2}}-\frac{\frac{1}{2}-a}{a+\frac{1}{2}}=\frac{a\left(3a+1\right)}{a^2-\left(\frac{1}{2}\right)^2}\)

\(\frac{x-29}{1970}+\frac{x-27}{1972}+\frac{x-25}{1974}+\frac{x-23}{1976}+\frac{x-21}{1978}+\frac{x-19}{1980}=\frac{x-1970}{29}+\frac{x-1972}{27}+\frac{x-1974}{25}+\frac{x-1976}{23}+\frac{x-1978}{21}+\frac{x-1978}{21}+\frac{x-1980}{19}\)

giải phương trình

\(\left(3x+2\right)\left(x^2-1\right)=\left(9x^2-4\right)\left(x+1\right)^{ }\)

\(\frac{2a-9}{2a-5}+\frac{3a}{3a-2}=2\)

\(\frac{1}{x^2+9x+20}+\frac{1}{x^2+11x+30}+\frac{1}{x^2+13x+42}=\frac{1}{18}\)

\(\frac{2}{-x^2+6x-8}-\frac{x-1}{x-2}=\frac{x+3}{x-4}\)

\(\frac{3}{4\left(x-5\right)}+\frac{15}{50-2x^2}=\frac{-7}{6\left(x+5\right)}\)

\(\frac{8x^23}{3\left(1-4x^2\right)}=\frac{2x}{6x-3}-\frac{1+8x}{4+8x}\)

\(\frac{x-3}{x-2}+\frac{x-2}{x-4}=-1\)

\(\frac{2x+1}{x-1}=\frac{5\left(x-1\right)}{x+1}\)

\(\frac{x-3}{x-2}-\frac{x-2}{x-4}=3\frac{1}{5}\)

\(\frac{5x-2}{2-2x}+\frac{2x-1}{2}=1-\frac{x^2+x-3}{1-x}\)

con dơi

GTNN là 2009

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