A= \(\frac{x^2-5x}{x^3+1}\)+ \(\frac{x+2}{x^2-x+1}\)+ \(\frac{1}{x+1}\)
B= ( \(\frac{x^2+2}{x^3-1}\) + \(\frac{x}{x^2+x+1}\)+ \(\frac{1}{1-x}\)) : \(\frac{x-1}{2}\)
C= \(\frac{x}{6-x}\)+ ( \(\frac{x}{x^2-36}\)- \(\frac{x-6}{x^2+6x}\)) : \(\frac{2x-6}{x^2+6x}\)
D= ( 1 - \(\frac{1}{x+2}\)) : ( \(\frac{4-x^2}{x^2-x-6}\)- \(\frac{x-2}{3-x}\)-\(\frac{x-3}{x+2}\)
Mn ưi giúp mk vs ak
Bạn không biết làm câu nào
câu cuối bn