Question

Efetue: 50 ! + 51 !-------------49 !

Answer 1

$\frac{50!+51!}{49!}=\frac{50.49!+51.50.49!}{49!}=50+51.50=2.600$

Answer 2

(50! + 51!)/(49! = (50 x 49!)+ (51 x 50 x 49!)/(49!)

(50 x 49!)/(49!) + (50 x 51 x 49!)/(49!) = 50 + (50 x 51) = 50 + 2550 = 2600

Espero ter ajudado.