document.write( "Question 1170012: please help me solve this equation : 4(x+3)^2+49(y-4)^2=196 \n" ); document.write( "
Algebra.Com's Answer #794885 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "NOTE: You are not \"solving\" the equation. You are putting it in some standard form so you can identify the conic section the equation represents.

\n" ); document.write( "\"4%28x%2B3%29%5E2%2B49%28y-4%29%5E2+=+196\"

\n" ); document.write( "The equation contains x^2 and y^2 terms, both positive -- so the equation is that of an ellipse.

\n" ); document.write( "The standard form of the equation of an ellipse is

\n" ); document.write( "\"%28x-h%29%5E2%2Fa%5E2%2B%28y-k%29%5E2%2Fb%5E2+=+1\" if the major axis is horizontal, or
\n" ); document.write( "\"%28x-h%29%5E2%2Fb%5E2%2B%28y-k%29%5E2%2Fa%5E2+=+1\" if the major axis is vertical

\n" ); document.write( "To get the given equation in standard form, we only need to get \"1\" on the right side, by dividing everything by 196:

\n" ); document.write( "\"4%28x%2B3%29%5E2%2F196%2B49%28y-4%29%5E2%2F196+=+1\"
\n" ); document.write( "\"%28x%2B3%29%5E2%2F49%2B%28y-4%29%5E2%2F4+=+1\"
\n" ); document.write( "\"%28x-%28-3%29%29%5E2%2F7%5E2%2B%28y-4%29%5E2%2F2%5E2+=+1\"

\n" ); document.write( "The equation is of an ellipse with center (-3,4), major axis 7, and minor axis 2.
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