Question

​​ALGUIEN POR FAVOR AYUDEME A RESOLVER ESTOS 3 PROBLEMAS

Answer 1

a. x^2 - 1

b. x^2 - 6x + 9

c.
`(3x + 1)/(x^2 + x)`

Explanation:

a.

(x + 1)(x - 1) =

= x^2 - x + x - 1

= x^2 - 1

b.

(x - 3)^2 =

= (x - 3)(x - 3)

= x^2 - 3x - 3x + 9

= x^2 - 6x + 9

c.

`(3 + (1)/(x))/(1 + x) =`

`= (x(3 + (1)/(x)))/(x(1 + x))`

`= (3x + 1)/(x + x^2)`

`= (3x + 1)/(x^2 + x)`