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(x-3)(x+3)(x^2+9)(x^4+81)(x^8+3^8)=x^16-3^16​

Răspuns :

DjFresh20

(x-3)(x+3)(x^2+9)(x^4+81)=

(a-b)(a+b)=a^2-b^2

(x^2-9)(x^2+9)(x^4+81)=

(x^4-81)(x^4+81)=

x^16-81^2

x^16-9^2^2

x^16-9^4

x^16-3^2^4

x^16-3^8

DMDaria

=> (x^2-9)(x^2-9)(x^4+81)(x^8+3^8)=x^16-3^16

=> (x^4-81)(x^4+81)(x^8+3^8)=x^16-3^16

=> (x^8-3^8)(x^8+3^8)=x^16-3^16

=> x^16-3^16= x^16-3^16 ADEVARAT

Sper ca e bine