1)
1) 2\3 V 27 = 2\3 V (9*3) = 2\3 * 3 V 3 = 2 V 3
2) V 2 ( V 8 - V 6) = (V 2 * V 8 ) - ( V 2 * V 6) = V 16 - V 12 = 4 - 2 V 3
3) 2 V 3 + 4 - 2 V 3 = 4
ответ 4
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2)
( V 7 - V3)^2 = (V7)^2 + (V3)^2 - 2V7V3 = 7 + 3 - 2 V 21 = 10 - 2 V 21