Factorize:
(i)`x^2+8x+16`
(ii) `4a^2-4a+1`

Explanation

(i)`x^2+8x+16`
`=x^2−2(4)(x)+4^2`
`=(x−4)^2`
`=(x−4)(x−4)`

(ii) `4a^2-4a+1`
`= ( 4a^2 - 4a + 1 )`
`= [ ( 2a )^2 - 2 xx 2a xx 1+ 1^2]`
`= ( 2a - 1)^2`
`= ( 2a - 1)( 2a - 1)`