document.write( "Question 1014129: f(x)=5x^2+50X+123 1/5 has a root at x=-4 2/5 , use the axis of symmetry to find the other root of the function. \n" ); document.write( "
Algebra.Com's Answer #630505 by Boreal(15235)\"\" \"About 
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5x^2+50x+123
\n" ); document.write( "vertex x value is -b/2a
\n" ); document.write( "vertex is -5 for x
\n" ); document.write( "y is -2
\n" ); document.write( "(-5,-1.8) is vertex.
\n" ); document.write( "symmetrical around x= -5
\n" ); document.write( "from vertex to one root x changes by +3/5, y changes plus 1.8
\n" ); document.write( "from vertex to other root x changes by -3/5, y changes plus 1.8 (-5.6,0)
\n" ); document.write( "\"graph%28300%2C200%2C-6%2C-4%2C-10%2C10%2C5x%5E2%2B50x%2B123%29\"
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