Question

将假分式x^2＋2x/x＋1化成整式和真分式的和的形式.

Answer 1

原式=(x²+2x+1-1)/(x+1)

=[(x+1)²-1]/(x+1)

=(x+1)²/(x+1)-1//(x+1)

=x+1-1/(x+1)