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)\"\" \"About 
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\n" ); document.write( "Find the product of the solutions of this equation. 3x^2 - 12x + 7 = 0.
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\n" ); document.write( "\n" ); document.write( "This is a nice question,  and it has a nice answer.\r
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\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
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\n" ); document.write( "\n" ); document.write( "Instead,  use the  Vieta's theorem.\r
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\n" ); document.write( "\n" ); document.write( "It says that the product of the roots of a quadratic equation   ax^2 + bx + c = 0\r
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\n" ); document.write( "\n" ); document.write( "is always   \"c%2Fa\",   or the constant term divided by the leading coefficient at  x^2.\r
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\n" ); document.write( "\n" ); document.write( "In your case,  the product of the roots is   \"7%2F3\",   so you get the answer instantly,  without making long calculations.\r
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\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
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\n" ); document.write( "\n" ); document.write( "It is  UNIVERSAL.\r
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\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
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\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
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