Question

(1+(( x+1)/(x-1)))/((1/(x-1)) - (1/(x+1))) porfaaa.... un buen matematico que se atreva a ayudarme?? :'(

Answer 1

{ 1 + [ (x+1)/(x-1) ] } / { [ 1/(x-1) - 1/(x+1) ] }

[ (x-1+x+1)/(x-1) ] / [ (x+1-x+1)/(x²-1) ]

( 2x / x-1 ) / ( 2 / x²-1 )

(2x)(x²-1) / 2(x-1)

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

= x(x+1)