Question

$x { }^{ - 1} - x? \times \frac{1}{2}$
me ajuda por favor​

Answer 1

Resposta:

:

\frac{(x+1)^2}{ x^2 -1} \times \frac{x-1}{x+1}

x

2

−1

(x+1)

2

×

x+1

x−1

a) 2

b) 1

c) x + 1

d) x - 1

\frac{(x+1)^2}{ x^2 -1} \times \frac{x-1}{x+1} = \frac{(x+1)\cdot(x+1)}{(x+1)\cdot)(x -1)} \times \frac{x-1}{x+1} = \frac{(x+1)}{(x -1)} \times \frac{x-1}{x+1} =1

x

2

−1

(x+1)

2

×

x+1

x−1

=

(x+1)⋅)(x−1)

(x+1)⋅(x+1)

×

x+1

x−1

=

(x−1)

(x+1)

×

x+1

x−1

=1

Explicação passo-a-passo:

eu achei no aplicativo mesmo