1)what constructions would you like to choose as new wonders of the world? why? read to lear note no 3. for me it's hard decide/choose my choice i am sure but i am not sure we can't do i think it’s right большое тому, кто ))
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Ответы на вопрос:
1.what construction i would like to choose as new wonders of the world 2.london eye 3.it is visited by hundreds of people 4.will be chosen as new wonders of the world 5.visiting that place 6.enjoy life
|x| + y^2 + z^2 - 2y + 4z + 5 = 0 |x| + y^2 - 2y + 1 + z^2 + 4z + 4 = 0 |x| + (y - 1)^2 + (z + 2)^2 = 0 |x| > = 0 при любом х (y - 1)^2 > = 0 при любом y (z + 2)^2 > = 0 при любом z сумма трёх неотрицательных выражений равна нулю, когда каждое из них равно нулю. x = 0, y - 1 = 0 > y = 1, z + 2 = 0 > z = -2 ответ. x = 0, y = 1, z = -2
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