Question

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

Answer 1

(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