document.write( "Question 680502: solve for x
\n" ); document.write( "9x^2-28=0 \n" ); document.write( "
Algebra.Com's Answer #422353 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
Use the quadratic formula to solve for x\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%280%2B-sqrt%28%280%29%5E2-4%289%29%28-28%29%29%29%2F%282%289%29%29\" Plug in \"a+=+9\", \"b+=+0\", \"c+=+-28\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28%22%22%2B-sqrt%280-%28-1008%29%29%29%2F%2818%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28%22%22%2B-sqrt%280%2B1008%29%29%2F%2818%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28%22%22%2B-sqrt%281008%29%29%2F18\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28sqrt%281008%29%29%2F18\" or \"x+=+%28-sqrt%281008%29%29%2F18\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2812%2Asqrt%287%29%29%2F18\" or \"x+=+%28-12%2Asqrt%287%29%29%2F18\"\r
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\n" ); document.write( "\n" ); document.write( "Exact Solutions: \"x+=+%282%2Asqrt%287%29%29%2F3\" or \"x+=+%28-2%2Asqrt%287%29%29%2F3\"\r
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\n" ); document.write( "\n" ); document.write( "Approximate Solutions: \"x+=+1.763834\" or \"x+=+-1.763834\"\r
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