Question

Solve this using the multiplication of polynomials
(x+1) (x-1)

Answer 1

`\large\boxed{x^(2) -1}`

Explanation:

How to multiply polynomials?

To multiply polynomials, apply the FOIL method, where:

• First
• Outside
• Inside
• Last

Applying FOIL:

`(x+1)(x-1)`

First

`x*x=x^(2)`

Outside

`x*(-1)=-x`

Inside

`x*1=x`

Last

`1*(-1)=-1`

After applying FOIL I ended up with this answer:
`x^(2) -x+x-1`.

You might notice that we can simplify this a bit by adding
`-x` and
`x`. Their sum is
`0`:

`x^(2) +0-1`

`x^(2) -1`

Answer 2

x^2 -1 . enjoyyyyyyyyyyuuuuu