1.Oblicz sprytnie
a) (4/9) do potęgi 7 podzielić przez (2/9) do potęgi 8=
i wytłumaczyć skąd jest wynik xdd
(4/9)^7 (4/9)^7
--------- = -------------------= 1 / (2/9) * (4/9 : 2/9)^7 = 9/2 * (4/9 * 9/2)^7 = 9/2 * 2^7
(2/9)^8 2/9 * (2/9)^7
9/2 * 128 = 9 * 64 = 576
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(4/9)^7 (4/9)^7
--------- = -------------------= 1 / (2/9) * (4/9 : 2/9)^7 = 9/2 * (4/9 * 9/2)^7 = 9/2 * 2^7
(2/9)^8 2/9 * (2/9)^7
9/2 * 128 = 9 * 64 = 576