Автор - liliannaklochko

упростите и найдите​

Ответ

Автор - asialoban

а) =( 4 - (-2) )/(4 + (-2)) = 6/2 = 3

b) = (-2)/10 = -0.2

c) = 1/(13² - 12²) = 1/(169 - 144) = 1/25 = 0.04

d) = ( 2² + (-1)²)/ 2 * (-1) = 5/(-2) = -2.5

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