Ответы на вопрос:
218 = 1·2^7+1·2^6) +0·2^5+1·2^4+1·2³+0·2²+1·2^1+0·2^0 = = 11011010 (2) 218 = 11.011.010 = 332 (8) 218 = 1101.1010 = da (16)
X^4 - 81 = 0 x^4 - 3^4 = 0 x^4 = 3^4 x = ± 3 256x^5 - x = 0 256x (x^4 - 1) = 0 x (x^4 - 1) = 0 x = 0 x^4 - 1 = 0 ==> x^4 = 1 ==> x = ± 1
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