Question

x/x²+x ÷ x²+x-2/x²-1 + x+1/x+2

Answer 1

x/x²+x ÷ x²+x-2/x²-1 + x+1/x+2

=x/x(x+1)÷(x+2)(x-1)/(x+1)(x-1)+( x+1)/(x+2)

=1/(x+1)乘(x+1)/(x+2)+( x+1)/(x+2)

=1/(x+2)+( x+1)/(x+2)

=(x+2)/(x+2)

=1