Question

x²+4x分之x+4与x(x-5)-2(x-5)分之x-5化简

Answer 1

(x+4)/(x^2+4x)

=(x+4)/[x(x+4)]

=1/x

=(x-2)/[x(x-2)

(x-5)/[x(x-5)-2(x-5)]

=(x-5)/[(x-5)(x-2)]

=1/(x-2)

=x/[x(x-2)]