Răspuns:
[tex]a = 9*7-8*6+5*3-4*2 + 1^{2021} \\\\a=63-48+15-8+1\\\\a=23-nr.prim\\\\\\b=5^3-4^3+3^3-2^3 +1^3+ 2^5\\\\b=125-64+27-8+1+32\\\\b=113-nr.prim[/tex]
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Răspuns:
[tex]a = 9*7-8*6+5*3-4*2 + 1^{2021} \\\\a=63-48+15-8+1\\\\a=23-nr.prim\\\\\\b=5^3-4^3+3^3-2^3 +1^3+ 2^5\\\\b=125-64+27-8+1+32\\\\b=113-nr.prim[/tex]