(i) x³ - 3x² + x – 3

By hit and trial method we find that x = 3 is a factor of it

So, on dividing x³ - 3x² + x – 3 by we get

x³ - 3x² + x – 3 =

(ii) 63x²y² - 7

= { Using the identity : }

(iii) 1 - 6x + 9x²

Using the identity :

1 - 6x + 9x² = (3x - 1)²

(iv)

Using middle term splitting, we get