document.write( "Question 591696: solve for x: \"+4x%5E2+-+3x+=+-12+\" \n" ); document.write( "
Algebra.Com's Answer #375717 by jim_thompson5910(35256)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "\"4x%5E2-3x=-12\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "\"4x%5E2-3x%2B12=0\" Get every term to the left side.\r
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\n" ); document.write( "\n" ); document.write( "Notice that the quadratic \"4x%5E2-3x%2B12\" is in the form of \"Ax%5E2%2BBx%2BC\" where \"A=4\", \"B=-3\", 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-%28-3%29+%2B-+sqrt%28+%28-3%29%5E2-4%284%29%2812%29+%29%29%2F%282%284%29%29\" Plug in \"A=4\", \"B=-3\", and \"C=12\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+sqrt%28+%28-3%29%5E2-4%284%29%2812%29+%29%29%2F%282%284%29%29\" Negate \"-3\" to get \"3\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+sqrt%28+9-4%284%29%2812%29+%29%29%2F%282%284%29%29\" Square \"-3\" to get \"9\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+sqrt%28+9-192+%29%29%2F%282%284%29%29\" Multiply \"4%284%29%2812%29\" to get \"192\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+sqrt%28+-183+%29%29%2F%282%284%29%29\" Subtract \"192\" from \"9\" to get \"-183\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+sqrt%28+-183+%29%29%2F%288%29\" Multiply \"2\" and \"4\" to get \"8\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+i%2Asqrt%28183%29%29%2F%288%29\" Simplify the square root (note: If you need help with simplifying square roots, check out this solver) \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%283%2Bi%2Asqrt%28183%29%29%2F%288%29\" or \"x+=+%283-i%2Asqrt%28183%29%29%2F%288%29\" Break up the expression. \r
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\n" ); document.write( "\n" ); document.write( "So the solutions are \"x+=+%283%2Bi%2Asqrt%28183%29%29%2F%288%29\" or \"x+=+%283-i%2Asqrt%28183%29%29%2F%288%29\"
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