document.write( "Question 58734: Find a polynomial with roots of 5,-8 and 2 such that f(4)=-9\r
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Algebra.Com's Answer #40297 by funmath(2933) ![]() You can put this solution on YOUR website! Find a polynomial with roots of 5,-8 and 2 such that f(4)=-9 \n" ); document.write( ": \n" ); document.write( "y=a(x-b)(x-c)(x-d) where b,c, and d are the roots. \n" ); document.write( "y=a(x-5)(x+8)(x-2) Now use f(4)=-9 to find a. \n" ); document.write( "-9=a(4-5)(4+8)(4-2) \n" ); document.write( "-9=a(-1)(12)(2) \n" ); document.write( "-9=a(-24) \n" ); document.write( "-9/-24=a(-24)/-24 \n" ); document.write( "9/24=a \n" ); document.write( ": \n" ); document.write( "Your polynomial in question is: \n" ); document.write( "y=(9/24)(x-5)(x+8)(x-2) Most books and teachers are happy with this, but you could multiply it out if you want. \n" ); document.write( "Happy Calculating!!! \n" ); document.write( " |