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Descompusa in produsi de factori expresia (x^{2} + 2x +1 ) + 3x(x+1) este ...

Răspuns :

(x²+2x+1)+3x(x+1)=
x²+2x+1+3x²+3x=
4x²+5x+1=
4x²+4x+x+1=
4x(x+1)+(x+1)=(x+1)(4x+1)