\(\frac{1}{x^2+6x+9}+\frac{1}{6x-x^2-9}+\frac{x}{x^2-9}\)
c ) \(\frac{1}{x^2+6x+9}+\frac{1}{6x-x^2-9}+\frac{x}{x^2-9}\)
Rút gọn : \(\frac{3}{x^2+6x+6}+\frac{3}{6x-x^2-9}+\frac{x^2+30x-27}{x^4-18x^2+81}\)
GPT:
\(\frac{13-x}{x+3}+\frac{6x^2+6}{x^4-8x^2-9}-\frac{3x+6}{x^2+5x+6}-\frac{2}{x-3}=0\)
1/\(\frac{4x^2-3x+5}{x^3-1}\) , \(\frac{1-2x}{x^2+x+1}\) , \(\frac{-2}{1}\)
2/\(\frac{1}{x+2}\) , \(\frac{8}{2x-x^2}\)
3/\(\frac{2x}{x^2-8x+16}\) , \(\frac{x}{3x^2-12x}\)
4/\(\frac{7x-1}{2x^2+6x}\) , \(\frac{5-3x}{x^2-9}\)
Quy đồng phân thức
quy đồng phân thức
b) \(\frac{x}{x^3-27};\frac{2x}{x^2-6x+9};\frac{1}{x^2+3x+9}\)
c) \(\frac{x-1}{2x+2};\frac{x+1}{2x-2};\frac{1}{1-x^2}\)
d)\(\frac{1}{x^3+1};\frac{3}{2x+2};\frac{2}{x^2-x+1}\)
Rút gọn biểu thức
a) A= \(\frac{x+1}{6x^3-6x^2}\) - \(\frac{x-2}{8x^3-8x}\)
b) B= \(\frac{4x^4-64}{9x^3+9}\) : \(\frac{8x^2-32x+32}{3x^2+6x+3}\)
Rút gọn : \(\left(\frac{x}{x^2-36}+\frac{6-x}{x^2+6x}\right):\frac{2x-6}{x^2+6x}+\frac{x}{6-x}\)
TÌM X BIẾT \(\frac{x-1}{x^2-9x+20}+\frac{2x-2}{x^2-6x+8}+\frac{3x-3}{x^2-x-2}+\frac{4x-4}{x^2+6x+5}=0\)