I tried just about every online calculator they had but they said its not factorable

HI Rayanna;

X

^{2}-16X+5It is not factorable. As far as I know, there is only way to resolve this.

First, let's do FOIL. I do not know if you are familiar with this.

FIRST

INNER

OUTER

LAST

(x- )(x+ )

or

(x+ )(x+ )

or

(x- )(x- )

FIRST...x

^{2}INNER & OUTER will be

?x-?x=-16x

LAST...

? times ?=+5

Obviously

+1 times +5 =5

or

-1 times -5 =5

There is no other option.

So...

(x-5)(x-1)

x

^{2}-5x-1x+5x

^{2}-6x+5I believe there was a typographical error in the equation. Please re-check it. If there is not, then this must be the factoring result...

((x-5)(x-1))-10x

I hope this helps. Please let me know if you need anything else.