document.write( "Question 43923This question is from textbook Algebra and Trigonometry with Analytic Geometey
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document.write( ": Given that (3x-a)(x-2)(x-7) = 3x^3-32x^2=81x-70, determine the value of a. My answer came out to be 3, but not sure of my answer. thanks for looking over my answer. \n" );
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Algebra.Com's Answer #28929 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Given that (3x-a)(x-2)(x-7) = 3x^3-32x^2=81x-70, determine the value of a.\r \n" ); document.write( "\n" ); document.write( "(3x-a)(x^2-9x+14)\r \n" ); document.write( "\n" ); document.write( "3x^3-27x^2+42x-ax^2+9ax-14a\r \n" ); document.write( "\n" ); document.write( "3x^3-(27+a)x^2+(42+9a)x-14a=3x^3-32x^2+81x-70\r \n" ); document.write( "\n" ); document.write( "This says: \n" ); document.write( "-27-a=-32 or a=5 \n" ); document.write( "and \n" ); document.write( "42+9a=81 or a=39/9\r \n" ); document.write( "\n" ); document.write( "and -14a=-70 or a=5\r \n" ); document.write( "\n" ); document.write( "There is a contradiction here that I think is the result of your posting. \n" ); document.write( "Please check your posting. \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |