document.write( "Question 1189861: To find b the equation b= c 2 − a 2 can be used but the value of c must be determined. Since c is the
\n" ); document.write( "distance from the foci to the center, take either foci and determine the distance to the center. Then solve for b.
\n" ); document.write( "Foci (-3, 8): c=| 2−( −3 ) |=| 5 |=5
\n" ); document.write( "Foci (7, 8): c=| 2− 7 |=| −5 |=5
\n" ); document.write( "c = 5
\n" ); document.write( "b= c 2 − a 2
\n" ); document.write( "b= 5 2 − 3 2 = 16 =4
\n" ); document.write( "b = 4 \n" ); document.write( "

Algebra.Com's Answer #821542 by ikleyn(52800) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "What is written in this post, is CORRECT\r
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\n" ); document.write( "\n" ); document.write( "( except of   b = c^2 - a^2   in the first line, where should be   b = $\"sqrt%28c%5E2+-+a%5E2%29\"$ , instead )\r
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\n" ); document.write( "\n" ); document.write( "In the future, write   a^2   if you want to denote the square of \"a\".\r
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\n" ); document.write( "\n" ); document.write( "Also, if you submit such a post, write somewhere at the beginning\r
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\n" ); document.write( "\n" ); document.write( "         \" check please whether my solution is correct \"\r
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\n" ); document.write( "\n" ); document.write( "in order for to give an idea to the tutors what you want from them.\r
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\n" ); document.write( "\n" ); document.write( "Happy learning from this forum ( ! )\r
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