document.write( "Question 338387: An equation with two solutions. I cannot wrap my head around this problem. I am completely lost as to what should be done first and so on.\r
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Algebra.Com's Answer #242533 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
I'm assuming that the equation is \"x%2F3=4%2F%28x%2B1%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"x%2F3=4%2F%28x%2B1%29\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "\"x%28x%2B1%29=4%2A3\" Cross multiply.\r
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\n" ); document.write( "\n" ); document.write( "\"x%28x%2B1%29=12\" Multiply\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2%2Bx=12\" Distribute.\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2%2Bx-12=0\" Subtract 12 from both sides.\r
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\n" ); document.write( "\n" ); document.write( "Notice that the quadratic \"x%5E2%2Bx-12\" is in the form of \"Ax%5E2%2BBx%2BC\" where \"A=1\", \"B=1\", and \"C=-12\"\r
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\n" ); document.write( "\n" ); document.write( "Let's use the quadratic formula to solve for \"x\":\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-B+%2B-+sqrt%28+B%5E2-4AC+%29%29%2F%282A%29\" Start with the quadratic formula\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-%281%29+%2B-+sqrt%28+%281%29%5E2-4%281%29%28-12%29+%29%29%2F%282%281%29%29\" Plug in \"A=1\", \"B=1\", and \"C=-12\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-1+%2B-+sqrt%28+1-4%281%29%28-12%29+%29%29%2F%282%281%29%29\" Square \"1\" to get \"1\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-1+%2B-+sqrt%28+1--48+%29%29%2F%282%281%29%29\" Multiply \"4%281%29%28-12%29\" to get \"-48\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-1+%2B-+sqrt%28+1%2B48+%29%29%2F%282%281%29%29\" Rewrite \"sqrt%281--48%29\" as \"sqrt%281%2B48%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-1+%2B-+sqrt%28+49+%29%29%2F%282%281%29%29\" Add \"1\" to \"48\" to get \"49\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-1+%2B-+sqrt%28+49+%29%29%2F%282%29\" Multiply \"2\" and \"1\" to get \"2\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-1+%2B-+7%29%2F%282%29\" Take the square root of \"49\" to get \"7\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-1+%2B+7%29%2F%282%29\" or \"x+=+%28-1+-+7%29%2F%282%29\" Break up the expression. \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%286%29%2F%282%29\" or \"x+=++%28-8%29%2F%282%29\" Combine like terms. \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+3\" or \"x+=+-4\" Simplify. \r
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\n" ); document.write( "\n" ); document.write( "So the solutions are \"x+=+3\" or \"x+=+-4\" \r
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\n" ); document.write( "\n" ); document.write( "If you need more help, email me at jim_thompson5910@hotmail.com\r
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\n" ); document.write( "\n" ); document.write( "Also, feel free to check out my tutoring website. \r
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\n" ); document.write( "\n" ); document.write( "Jim
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