document.write( "Question 519839: find all solutions of the equation 2x^2 - 8x + 16 = 0 and express them in the form a + bi \n" ); document.write( "
Algebra.Com's Answer #345803 by jim_thompson5910(35256)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "\"2x%5E2-8x%2B16=0\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "Notice that the quadratic \"2x%5E2-8x%2B16\" is in the form of \"Ax%5E2%2BBx%2BC\" where \"A=2\", \"B=-8\", and \"C=16\"\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-%28-8%29+%2B-+sqrt%28+%28-8%29%5E2-4%282%29%2816%29+%29%29%2F%282%282%29%29\" Plug in \"A=2\", \"B=-8\", and \"C=16\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%288+%2B-+sqrt%28+%28-8%29%5E2-4%282%29%2816%29+%29%29%2F%282%282%29%29\" Negate \"-8\" to get \"8\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%288+%2B-+sqrt%28+64-4%282%29%2816%29+%29%29%2F%282%282%29%29\" Square \"-8\" to get \"64\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%288+%2B-+sqrt%28+64-128+%29%29%2F%282%282%29%29\" Multiply \"4%282%29%2816%29\" to get \"128\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%288+%2B-+sqrt%28+-64+%29%29%2F%282%282%29%29\" Subtract \"128\" from \"64\" to get \"-64\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%288+%2B-+sqrt%28+-64+%29%29%2F%284%29\" Multiply \"2\" and \"2\" to get \"4\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%288+%2B-+8%2Ai%29%2F%284%29\" Take the square root of \"-64\" to get \"8%2Ai\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%288+%2B+8%2Ai%29%2F%284%29\" or \"x+=+%288+-+8%2Ai%29%2F%284%29\" Break up the expression. \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%288%29%2F%284%29+%2B+%288%2Ai%29%2F%284%29\" or \"x+=++%288%29%2F%284%29+-+%288%2Ai%29%2F%284%29\" Break up the fraction for each case. \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+2%2B2%2Ai\" or \"x+=++2-2%2Ai\" Reduce. \r
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\n" ); document.write( "\n" ); document.write( "So the solutions are \"x+=+2%2B2%2Ai\" or \"x+=+2-2%2Ai\" \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, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you\r
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