document.write( "Question 148164: I worked out the inequality and found the possible solutions but do not feel like I am writing the interval notation correctly. I would appreciate your help and a big thank you in advance. 6x^2+25x+14<=0
\n" ); document.write( "In the end I have -2/3 and -7/2 so far I have ( -7/2] U [-2/3) with the infinities before the -7/2 and the -2/3.
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Algebra.Com's Answer #108556 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "\"6x%5E2%2B25x%2B14%3C=0\" Start with the given inequality\r
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\n" ); document.write( "\n" ); document.write( "\"%282x%2B7%29%283x%2B2%29%3C=0\" Factor the left side\r
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\n" ); document.write( "\n" ); document.write( "\"%282x%2B7%29%283x%2B2%29=0\" Set the left side equal to zero\r
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\n" ); document.write( "\n" ); document.write( "Set each individual factor equal to zero:\r
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\n" ); document.write( "\n" ); document.write( "\"2x%2B7=0\" or \"3x%2B2=0\" \r
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\n" ); document.write( "\n" ); document.write( "Solve for x in each case:\r
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\n" ); document.write( "\n" ); document.write( "\"x=-7%2F2\" or \"x=-2%2F3\" \r
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\n" ); document.write( "\n" ); document.write( "So our critical values are \"x=-7%2F2\" and \"x=-2%2F3\" \r
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\n" ); document.write( "\n" ); document.write( "Now set up a number line and plot the critical values on the number line\r
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\n" ); document.write( "\n" ); document.write( "\"number_line%28+600%2C+-10%2C+10%2C-7%2F2%2C-2%2F3%29\"\r
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\n" ); document.write( "\n" ); document.write( "So let's pick some test points that are near the critical values and evaluate them.\r
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\n" ); document.write( "\n" ); document.write( "Let's pick a test value that is less than \"-7%2F2\" (notice how it's to the left of the leftmost endpoint):\r
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\n" ); document.write( "\n" ); document.write( "So let's pick \"x=-4\"\r
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\n" ); document.write( "\n" ); document.write( "\"6x%5E2%2B25x%2B14%3C=0\" Start with the given inequality\r
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\n" ); document.write( "\n" ); document.write( "\"%282%28-4%29%2B7%29%283%28-4%29%2B2%29%3C=+0\" Plug in \"x=-4\"\r
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\n" ); document.write( "\n" ); document.write( "\"10%3C=+0\" Evaluate and simplify the left side\r
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\n" ); document.write( "\n" ); document.write( "Since the inequality is false, this means that the interval does not work. So this interval is not in our solution set and we can ignore it.\r
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\n" ); document.write( "\n" ); document.write( "Let's pick a test value that is in between \"-7%2F2\" and \"-2%2F3\":\r
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\n" ); document.write( "\n" ); document.write( "So let's pick \"x=-2\"\r
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\n" ); document.write( "\n" ); document.write( "\"6x%5E2%2B25x%2B14%3C=0\" Start with the given inequality\r
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\n" ); document.write( "\n" ); document.write( "\"%282%28-2%29%2B7%29%283%28-2%29%2B2%29%3C=+0\" Plug in \"x=-2\"\r
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\n" ); document.write( "\n" ); document.write( "\"-12%3C=+0\" Evaluate and simplify the left side\r
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\n" ); document.write( "\n" ); document.write( "Since the inequality is true, this means that the interval works. So this tells us that this interval is in our solution set.\r
\n" ); document.write( "\n" ); document.write( " So part our solution in interval notation is []\r
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\n" ); document.write( "\n" ); document.write( "Let's pick a test value that is greater than \"-2%2F3\" (notice how it's to the right of the rightmost endpoint):\r
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\n" ); document.write( "\n" ); document.write( "So let's pick \"x=1\"\r
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\n" ); document.write( "\n" ); document.write( "\"6x%5E2%2B25x%2B14%3C=0\" Start with the given inequality\r
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\n" ); document.write( "\n" ); document.write( "\"%282%281%29%2B7%29%283%281%29%2B2%29%3C=+0\" Plug in \"x=1\"\r
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\n" ); document.write( "\n" ); document.write( "\"45%3C=+0\" Evaluate and simplify the left side\r
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\n" ); document.write( "\n" ); document.write( "Since the inequality is false, this means that the interval does not work. So this interval is not in our solution set and we can ignore it.\r
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\n" ); document.write( "\n" ); document.write( "Summary:\r
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\n" ); document.write( "\n" ); document.write( "So the solution in interval notation is:\r
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\n" ); document.write( "\n" ); document.write( "[]\r
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\n" ); document.write( "\n" ); document.write( "Here's a graph to prove it\r
\n" ); document.write( "\n" ); document.write( "\"+graph%28+500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C+%282x%2B7%29%283x%2B2%29%29+\"
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