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Luci2001
a fost răspuns

(xla a 3+xla a2+x)(xla a 3+xla a2+x+2)+1

Răspuns :

(x³+x²+x)(x³+x²+x+2)+1=
notam x³+x²+x=a

a(a+2)+1=
a²+2a+1=(a+1)²
Deci
(x³+x²+x)(x³+x²+x+2)+1=(x³+x²+x+1)²

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