5 - x(6 - x) in the form of factors is :

1. (1 - x)(5 + x)

2. (1 + x)(5 + x)

3. (1 - x)(5 - x)

4. (1 + x)(5 - x)

Given,

   5 - x(6 - x)

= 5 - 6x + x²

= x² - 6x + 5

= x² - 5x - x + 5

= x(x - 5) - 1(x - 5)

= (x - 1)(x - 5)

= [-(1 - x).-(5 - x)]

= (1 - x)(5 - x).

Hence, Option 3 is the correct option.