Question

aratati ca urmatoarele numere sun atat patrate perfecte , cat si cuburi perfecte:a)x=64*56+64*8;b)y=8*7+8*5-8*4; c)z=27*95-227*68; d)t=27*26+27; e)u=27*28-27; f)v=2^61-2^60; g)w=3^37-2*3^36; h)s=3^19-3^18-3^1; i)r=(6^7)^8/6^2^1

Answer 1

a)  x = 64(56 + 8) = 64·64 = 64² = (4³)² = (4²)³ = 16³
b)  y = 8(7 + 5 - 4) = 8·8 = 8² = (2³)² = (2²)³ = 4³
c)  z = 27(95 - 68) = 27·27 = 27² = (3³)² = (3²)³ = 9³³
d) t = 27·27 = 27² = 9³
e) u = 27.27
f)  v = 2^60 = (2^30)² = (2^20)³
g)  w = 3^36 = (3^18)² = (3^12)³
h)  s = ? e scris corect ?
i)  r =  cum adica (6²)^1  ???
r = 6^56 ÷ 6² = 6^54 = (6^27)² = (6^18)³