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Alyna2001
a fost răspuns

Screti,in ordine crescatoare, multimea numerelor intregi x, pt care (x+1) modul din -6.

Descompuneti in factori:
a)5x³-20x²+20x=
b)4*(3x-1)-5x*(3x-1)=
c)25-20x+4x²=
d)4x²-(3x-2)²=
e)18x³-9x²-2x+1=

Răspuns :

Renatemambouko
a)5x³-20x²+20x=5x(x²-4x+4)=5x(x-2)²
b)4*(3x-1)-5x*(3x-1)=(3x-1)(4-5x)
c)25-20x+4x²=(5-2x)²
d)4x²-(3x-2)²=(2x-3x+2)(2x+3x-2)=(2-x)(5x-2)
e)18x³-9x²-2x+1=9x²(2x-1)-(2x-1)=(2x-1)(9x²-1)=(2x-1)(3x-1)(3x+1)

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