document.write( "Question 1093352: please help me solve this equation in interval notation
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document.write( "x^3+5x<6x^2\r
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document.write( "I tried moving it to one side and did synthetic division which gave me x(x-5) and then I did the sign diagram of the 0 and 5 and got that it was smaller than 0 at (0,5) but it was incorrect \n" );
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Algebra.Com's Answer #707964 by ikleyn(52797)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "x^3 + 5x < 6x^2 ====>\r\n" ); document.write( "\r\n" ); document.write( "x^3 - 6x^2 + 5x < 0 ====> factor left side ====>\r\n" ); document.write( "\r\n" ); document.write( "x*(x^2 -6x + 5) < 0 ====> factor the quadratic polynomial ====>\r\n" ); document.write( "\r\n" ); document.write( "x*(x-5)*(x-1) < 0.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "There are 3 critical points - the roots of the polynomial, where is becomes eqial to zero:\r\n" ); document.write( "\r\n" ); document.write( "x = 0, x = 1 and x = 5,\r\n" ); document.write( "\r\n" ); document.write( "and there are 4 intervals:\r\n" ); document.write( "\r\n" ); document.write( "(-infinity,0), where the function is NEGATIVE;\r\n" ); document.write( "\r\n" ); document.write( "(0,1), where the function is positive;\r\n" ); document.write( "\r\n" ); document.write( "(1,5), where the function is negative; and\r\n" ); document.write( "\r\n" ); document.write( "(5,infinity), where the function is positive.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Now YOU make an effort and complete the solution.\r\n" ); document.write( "\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "------------- \n" ); document.write( "See the lessons\r \n" ); document.write( "\n" ); document.write( " - Solving problems on quadratic inequalities,\r \n" ); document.write( "\n" ); document.write( " - Solving inequalities for high degree polynomials factored into a product of linear binomials \r \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r \n" ); document.write( "\n" ); document.write( " - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Inequalities\".\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I\r \n" ); document.write( "\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |