document.write( "Question 388277: How do I solve this inequality?:\r
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document.write( "x^3+5x^2-9x-45 is greater than and equal to 0\r
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Algebra.Com's Answer #274576 by Jk22(389)![]() ![]() You can put this solution on YOUR website! x^3+5x^2-9x-45=x^2(x+5) -9(x+5) by grouping \n" ); document.write( " \n" ); document.write( "we have (x+5)(x^2-9) is the function. \n" ); document.write( " \n" ); document.write( "Since the roots are simple, and that for x->-oo the function goes to negative values, we have : \n" ); document.write( " \n" ); document.write( "the domain where the function is positive is : [-5;-3]U[3,+oo[\r \n" ); document.write( "\n" ); document.write( "
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