Opera i simplifica! Como se hace? gracias!
5x 4x
a) ------ + ------=
x+1 x^2-1
5 1 2x-3 3
b)---- + ------ - ------ - --- =
4x x + 1 x^2 4
5x 4x 5x(x-1)+4x 5x²-5x+4x x(5x-1)
a) ------ + -------------= -------------- = --------------- = --------------
x+1 (x+1)(x-1) (x+1)(x-1) (x+1)(x-1) (x+1)(x-1)
5 1 2x-3 3
b)---- + ------ - ------ - --- =
4x x + 1 x^2 4