Решите уравнение: корень из x+2 = -x решите неравенство: log(внизу 5)(x+2) меньше равно 2

Вуравнении х=-1 неравенство можно записать как log(внизу5)(х+2)≤log(внизу5)(25), тогда х+2≤25,  х≤23

По условию, прямоугольник разрезали на три равных квадрата, следовательно, длина прямоугольника в 3 раза больше его ширины. обозначив ширину прямоугольника равной хсм, а длину 3х см, получим: 2(3х+х)=72 - периметр прямоугольника                 2*4х=72                 8х=72                 х=9 (см) - ширина прямоугольника (она же, сторона квадрата) 9*9= 81 (см²) - площадь каждого квадрата 4*9= 36 (см) - периметр каждого квадрата

kiev - one of the largest cities in europe, the administrative, economic, scientific, cultural and educational center of ukraine. there are more than 2.5 million inhabitants. modern kiev is developing dynamically, restored and recovered, therefore attracts more and more tourists.

according to legend, kiev was founded in kiem vi - vii centuries. bc the rise of the city contributed to its geographical position: it took the most important trade route "from the varangians to the greeks" in constantinople (constantinople), to asia, to the don, to novgorod. over the centuries kiev has repeatedly passed into the hands of the various nations and peoples, while in 1934, did not become the capital of the ukrainian soviet socialist republic.

kiev has a great cultural stock - there are more than 30 museums, about 2000 unique architecture, 33 theaters, a large number of permanent art exhibitions. the main attractions of the city, which was his "calling card" - a kiev-pechersk lavra, st. sophia cathedral, golden gate, st. andrew's church, khreschatyk and independence square.