document.write( "Question 200758: x^2-36=0 \n" ); document.write( "
Algebra.Com's Answer #151009 by jim_thompson5910(35256)\"\" \"About 
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\n" ); document.write( "\"x%5E2-36=0\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "Notice that the quadratic \"x%5E2-36\" is in the form of \"Ax%5E2%2BBx%2BC\" where \"A=1\", \"B=0\", and \"C=-36\"\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+=+%280+%2B-+sqrt%28+%280%29%5E2-4%281%29%28-36%29+%29%29%2F%282%281%29%29\" Plug in \"A=1\", \"B=0\", and \"C=-36\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%280+%2B-+sqrt%28+0-4%281%29%28-36%29+%29%29%2F%282%281%29%29\" Square \"0\" to get \"0\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%280+%2B-+sqrt%28+0--144+%29%29%2F%282%281%29%29\" Multiply \"4%281%29%28-36%29\" to get \"-144\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%280+%2B-+sqrt%28+0%2B144+%29%29%2F%282%281%29%29\" Rewrite \"sqrt%280--144%29\" as \"sqrt%280%2B144%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%280+%2B-+sqrt%28+144+%29%29%2F%282%281%29%29\" Add \"0\" to \"144\" to get \"144\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%280+%2B-+sqrt%28+144+%29%29%2F%282%29\" Multiply \"2\" and \"1\" to get \"2\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%280+%2B-+12%29%2F%282%29\" Take the square root of \"144\" to get \"12\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%280+%2B+12%29%2F%282%29\" or \"x+=+%280+-+12%29%2F%282%29\" Break up the expression. \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2812%29%2F%282%29\" or \"x+=++%28-12%29%2F%282%29\" Combine like terms. \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+6\" or \"x+=+-6\" Simplify. \r
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\n" ); document.write( "\n" ); document.write( "So the solutions are \"x+=+6\" or \"x+=+-6\" \r
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