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ex 6 din imagine multumesc

Ex 6 Din Imagine Multumesc class=

Răspuns :

a) =3x(x²+2x+1)=3x(x+1)²
b)= (x+1)(4x-3)
c)=(x+1)²-3²=(x+1-3)(x+1+3)=(x-2)(x+4)
d)=(x+3)²-1=(x+3-1)(x+3+1)=(x+2)(x+4)
e)=(x+4)²-4=(x+4-2)(x+4+2)=(x+2)(x+6)
f)=x²(x+3)-4(x+3)=(x+3)(x²-4)=(x+3)(x-2)(x+2)