document.write( "Question 1028960: can someone help me solve this??\r
\n" ); document.write( "\n" ); document.write( " ƒ(x) = (x4)/4 − 3x3 + (23x2)/2 - 15x
\n" ); document.write( "Find the x values where the extremes occur.
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\n" ); document.write( " A. 1, -3, 5
\n" ); document.write( " B. 1, 3, -5
\n" ); document.write( " C. 1, 3, 5
\n" ); document.write( " D. 1, -3, -5
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Algebra.Com's Answer #644030 by Boreal(15235)\"\" \"About 
You can put this solution on YOUR website!
using calculus and taking the derivative
\n" ); document.write( "x^3-9x^2+23x-15=0
\n" ); document.write( "Test each.
\n" ); document.write( "1 works, and it does for all choices
\n" ); document.write( "for 5, 125-225+115-15=0, so 5 works.
\n" ); document.write( "for 3, 27-81+69-15=0
\n" ); document.write( "It is C.
\n" ); document.write( "\"graph%28300%2C200%2C-10%2C10%2C-10%2C10%2C%281%2F4%29x%5E4-3x%5E3%2B%2823%2F2%29x%5E2-15x%29\"\r
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