document.write( "Question 254953: This problem needs to be solved by linear combination method:
\n" ); document.write( "{9xsqrd - 6ysqurd =291
\n" ); document.write( " 3xsqurd + 2ysqurd =197
\n" ); document.write( "both of these are to be bracketed on the left.
\n" ); document.write( " I am really struggling with this problem and am wondering if you must multiply the bottom set by 2 to make it compatible with the top set and where do I go from there? I hope you can help me soon.
\n" ); document.write( "Jeiel
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Algebra.Com's Answer #187266 by drk(1908)\"\" \"About 
You can put this solution on YOUR website!
Your two equations are:
\n" ); document.write( "(i)\"9x%5E2+-+6y%5E2+=+291\"
\n" ); document.write( "(ii)\"3x%5E2+%2B+2y%5E2+=197\"
\n" ); document.write( "step 1 - multiply (ii) by 3 to get
\n" ); document.write( "(iii)\"9x%5E2+%2B+6y%5E2+=+591\"
\n" ); document.write( "add (i) to (iii) to get
\n" ); document.write( "(iv) \"18x%5E2+=+882\"
\n" ); document.write( "solving for x, we get
\n" ); document.write( "\"x%5E2+=+49\"
\n" ); document.write( "so
\n" ); document.write( "\"x+=+plus+or+minus+7\"
\n" ); document.write( "Now, find y.
\n" ); document.write( "\"3%2A7%5E2+%2B+2y%5E2+=197\"
\n" ); document.write( "\"147+%2B+2y%5E2+=197\"
\n" ); document.write( "\"2y%5E2+=+50%7D%7D%0D%0A%7B%7B%7By%5E2+=+25\"
\n" ); document.write( "\"y+=+plus+or+minus+5\"
\n" ); document.write( "
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