-1+4а-4а²
-(4а²-4а+1)
= -(2а-1)²
(х+3)²-1
(х+3-1)(х+3+1)
= (х+2)(х+4)
(4а-3)²-16
(4а-3-4)(4а-3+4)
= (4а-7)(4а+1)
8-p³
2³p³
(2-p)(2²+2p+p²)
= (2-p)(4+2p+p²)
