An observatory is shaped like a cylinder standing on one of its bases with a dome on top.The diameter of the floor of the observ
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Answer:
Step-by-step explanation:
We know that
Also ,
So ,
To get rid of 
, you have to take the third root of both sides:
![\sqrt[3]{x^{3}} = \sqrt[3]{1}](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7Bx%5E%7B3%7D%7D%20%3D%20%5Csqrt%5B3%5D%7B1%7D%20)
But that won't help you with understanding the problem. It is better to write
as a product of 2 polynomials:
From this we know, that
is the solution. Another solutions (complex roots) are the roots of quadratic equation.
But that won't help you with understanding the problem. It is better to write
From this we know, that