Question

qual a solucao de a+x+ a= 4a-x . 2 3

Answer 1

Resposta:

2a+x=4a-x . 23

-2a= - 24x

x=$\frac{a}{12}$

Answer 2

Resposta:

A(x,3) = 4 . A(x,2)

x!/(x - 3)! = 4 . A(x,2)

X(x-1)(x-2)(x-3)!/(x-3)! = 4 . A(x,2)

X(x-1)(x-2) = 4. A(x,2)

X(x-1)(x-2) = 4. (x!/(x-2)!)

X(x-1)(x-2) = 4. (x(x-1)(x-2)!/(x-2)!)

X(x-1)(x-2) = 4. (x(x-1)

(x-2) = 4. (x(x-1)/X(x-1)

(x-2) = 4

X = 4 + 2 = 6

Espero ter ajudado

Explicação passo-a-passo: