Algebra.Com's Answer #721476 by ikleyn(52781)![\"\"](\"/images/stars/stars-13.gif\")  
You can put this solution on YOUR website!
.
\n" );
document.write( "Evaluate 
\n" );
document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r
\n" );
document.write( "
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "I just solved similar, but much more simple problem under the link\r
\n" );
document.write( "\n" );
document.write( "https://www.algebra.com/algebra/homework/Angles/Angles.faq.question.1106262.html\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "https://www.algebra.com/algebra/homework/Angles/Angles.faq.question.1106262.html\r
\n" );
document.write( "
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( " So, I will assume that it was YOU who requested the preceding problem (because \"Lightning never strikes the same place twice\").\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( " In other words, I will assume that you are familiar with the idea and the solution of that previous problem.\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( " Based on it, I will be short with this one.\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "\r\n" );
document.write( "Let us consider, for brewity of writing, more general expression\r\n" );
document.write( "\r\n" );
document.write( " = x,\r\n" );
document.write( "\r\n" );
document.write( "where a =  , b =  . Then \r\n" );
document.write( "\r\n" );
document.write( " = x. (It is clear, and I will not spend words to justify it . . . )\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "It is equivalent to\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( " -  = x, or\r\n" );
document.write( "\r\n" );
document.write( " = 0.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Now substitute here a = , b = . You will get this equation in the form\r\n" );
document.write( "\r\n" );
document.write( " = 0, or, multiplying all the terms by 3\r\n" );
document.write( "\r\n" );
document.write( " = 0.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Now I will not go into details, and simply show the plot of the last polynomial.\r\n" );
document.write( "\r\n" );
document.write( "It clearly shows that x= 2 is the root. And now you can check it MANUALLY (as I did . . . )\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( " \r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Plot y =  \r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "It makes me CONVINCED that = 2.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Check.  = 1.984 (approx.)\r\n" );
document.write( " \r
\n" );
document.write( "\n" );
document.write( "Solved.\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( " |