S = S1 + S2
S1 = v1t
S2 = v2t
S = 56 * 3 + 108*3 = 168 + 324 = 492 км
Ответ на 492 км
<span><span><span><span><span><span>A</span><span>B</span><span>=</span><span>A</span><span>C</span><span>c</span><span>o</span><span>s</span><span><span><span><span>30</span></span><span><span>0</span></span></span></span><span>=</span><span><span><span><span><span>3</span></span></span><span><span>√</span></span></span></span><span><span><span>/</span></span></span><span>2</span><span>,</span><span>B</span><span>C</span><span>=</span><span>A</span><span>C</span><span>s</span><span>i</span><span>n</span><span><span><span><span>30</span></span><span><span>0</span></span></span></span><span>=</span><span>1</span><span><span><span>/</span></span></span><span>2</span><span>,</span><span>B</span><span>D</span><span>=</span><span><span><span><span><span>A</span><span>B</span><span>⋅</span><span>B</span><span>C</span></span></span><span><span><span>A</span><span>C</span></span></span></span></span><span>=</span><span><span><span><span><span>3</span></span></span><span><span>√</span></span></span></span><span><span><span>/</span></span></span><span>4</span></span></span></span></span></span>
3x^3 - 3x^2 + 3x - 4x = 5x^2 + 2 - 2x^2 + 3x^3 - x.
3x^3 - 3x^3 - 3x^2 - 5x^2 + 2x^2 + 3x - 4x + x = 2.
-6x^2 = 2.
x^2 = 2/-6.
x^2 = -1/3.
Ответ: решений нет, т.к. значение после знака "=" - отрицательное. А из отрицательных чисел корни не извлекаются.
5 + 22 = 27
22 + 5 = 27
27 - 22 = 5
27 - 5 = 22
650 + 85=735
735-480=255
ответ:255
