document.write( "Question 986326: f(x) = x^4 - 4x^3 - 43x^2 + 130x + 168 is the equation of a quartic function. Use a grapher to find the largest value of x at which the graph crosses the x-axis. \n" ); document.write( "
Algebra.Com's Answer #607111 by Alan3354(69443)\"\" \"About 
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x = -6, -1, 4, 7
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