document.write( "Question 695911: Find the product of the solutions of this equation. 3x^2 - 12x + 7 = 0 \n" ); document.write( "
Algebra.Com's Answer #854055 by ikleyn(53712) You can put this solution on YOUR website! . \n" ); document.write( ". \n" ); document.write( "Find the product of the solutions of this equation. 3x^2 - 12x + 7 = 0. \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "This is a nice question, and it has a nice answer.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "To get the product of the roots of this equation, you do not need to solve the equation \n" ); document.write( "and you do not need to find the roots explicitly, as the other tutor makes in his post.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Instead, use the Vieta's theorem.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It says that the product of the roots of a quadratic equation ax^2 + bx + c = 0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "is always \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "In your case, the product of the roots is \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The Vieta's theorem works for real roots and for complex roots: in other words, it works for any quadratic equation.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is UNIVERSAL.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "This problem is specially given to you to check if you are familiar with the Vieta's theorem,\r \n" ); document.write( "\n" ); document.write( "and if you are not familiar with it, it is a good chance to learn it and to see how perfectly it works.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is also a good question for an interview, since it allows to learn momentarily, \n" ); document.write( "if a person knows Algebra and generally a school Math uniformly. \n" ); document.write( "How a person answers this question, it demonstrates/reflects the person's mathematical culture.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |