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(b-1)(b+1)(b la a 2-a +1)(b la a 4-a +1) +1
Am nevoie de ajutor urgent


Răspuns :

[tex](b-1)(b+1) b^{2}+1 [/tex])([tex] b^{4}+1 [/tex])+1[tex]=(b^{2}-1)(b^{2}+1)(b^{4}+1)+1= \\ =(b^{4}-1)(b^{4}+1)+1= \\ =b^{8}-1+1= \\ =b^{8}.[/tex]=