document.write( "Question 248424: hi i would like to know what are all the real zeros of f(x)=x^4-2x^3-23x^2+24x+144? and can u please show me hot to work it out \n" ); document.write( "
Algebra.Com's Answer #181042 by Alan3354(69443)\"\" \"About 
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I graphed it. The zeroes are -3, -3, 4, 4
\n" ); document.write( "x^4-2x^3-23x^2+24x+144 = (x+3)^2*(x-4)^2
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