document.write( "Question 123922: For this type of excercise what is the procedure?\r
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\n" ); document.write( "\n" ); document.write( "(3x+1)(5-10x)>0
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Algebra.Com's Answer #90902 by checkley71(8403)\"\" \"About 
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(3x+1)(5-10x)>0
\n" ); document.write( "15x+5-30x^2-10x>0
\n" ); document.write( "-30x^2+5x+5>0
\n" ); document.write( "30x^2-5x-5>0
\n" ); document.write( "(10x-5)(3x+1)>0
\n" ); document.write( "10x-5>0
\n" ); document.write( "10x>5
\n" ); document.write( "x>5/10
\n" ); document.write( "x>.5 answer.
\n" ); document.write( "3x+1>0
\n" ); document.write( "3x>-1
\n" ); document.write( "x>-1/3 answer or x>-.33333.
\n" ); document.write( "proof:
\n" ); document.write( "let x=-.3
\n" ); document.write( "(3*-.3+1)(5-10*-.3)>0
\n" ); document.write( "(-.9+1)(5+3)>0
\n" ); document.write( ".1*8>0
\n" ); document.write( ".8>0
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