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calculat exercitiu
1.[tex](8+8:8) ^{2} : 3^{4} [/tex]
2.[tex](21+21:21+5) ^{2} :728[/tex]
3.[tex](3 ^{10}+ 3^{9} + 3^{8} ): 3^{8} [/tex]
este urgentt
nimeni nu ma ajuta de o ora



Răspuns :

(8+8:8)²:3⁴=(8+1)²:3⁴=9²:(3²)²=9⁴:9⁴=1

(21+21:21+5)²:728=(21+1+5)²:728=27²:728=729:728=1,0013736

(3¹°+3⁹+3⁸):3⁸=3⁸(3²+3+1):3⁸=(3²+3+1)=9+3+1=12+1=13