Question

se considera numerele

Answer 1

Răspuns:

Explicație pas cu pas:

a = -1/2 + 1/3 : 1/4 = -1/2 + 1/3*4 = -1/2 + 4/3 = -3/6 + 8/6 = 5/6

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(√3/2 - 2/√3)^2 = 3/4 - 2 + 4/3 = 9/12 - 24/12 + 16/12 = 1/12

(√3/2 - 1)(√3/2 + 1) = 3/4 - 1 = 3/4 - 4/4 = -1/4

b = 1/12 + 1/4 = 1/12 + 3/12 = 4/12 = 1/3

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N = 2a - 5b = 2*5/6 - 5*1/3 = 5/3 - 5/3 = 0, numar natural