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Restringeti:
1)25X²-10X+1
2)0.25X²+X+1
3)X³-6X²+12X-8


Răspuns :

a) 25x² - 10x + 1 = a² - 2ab + b²

( a - b )² = ( 5x - 1 )²

b) 0,25x² + x + 1 = 0,25( x + 2 )²

c) x³ - 6x² + 12x - 8 = a³ - 3a²b + 3ab - b³

( a - b )³ = ( x - 2 )³