Question

Descompuneti in factori , grupand convenabil termenii :
x^6-x^4-16x^2+16
Va rog ajutatima !!!!!!!!!!!!!!!!!!!!!

Answer 1

$(x^6-x^4)-(16 x^{2} -16)=x^4( x^{2} -1)-16( x^{2} -1)=( x^{2} -1)(x^4-16) \\ =(x-1)(x+1)( x^{2} -4)( x^{2} +4)=(x-1)(x+1)(x-2)(x+2)( x^{2} +4)$