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va rog punctele c,f, i, urgent, dau coronita!

Va Rog Punctele Cf I Urgent Dau Coronita class=

Răspuns :

c)9x^3-4x=x(9x^2-4)=x(3x-2)(3x+2)

f)3x^3-12x=3x(x^2-4)=3x(x-2)(x+2)

i)3x^3+18x^2+27=3x^3+9x^2+9x^2+27x=3x^2(x+3)+9x(x+3)=3x(x+3)(x+3)=3x(x+3)^2