Question

How do you factor the expression `x^2 - 6x + 5`?

Answer 1

`(x-5)(x-1)`

Explanation:

The corresponding equation is `x^2-6x+5=0`
`D=36-20`
`D=16`

`x_1=(6+sqrt(16))/2=10/2=5`
`x_2=(6-sqrt(16))/2=2/2=1`

So the expression becomes: `(x-5)(x-1)`