document.write( "Question 906591: 9x^2 + 4y^2 + 18x - 16y = 1\r
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document.write( "I have a problem when solving this equation to get it in the standard form.
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document.write( "I got (9(x+1)^2)/26+(2(y-2)^2)/13=1 as the answer which I dont think that it is the correct answer.
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document.write( "What is the actual answer or solution for this question? Thank you.
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Algebra.Com's Answer #549944 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 9x^2 + 4y^2 + 18x - 16y = 1 \n" ); document.write( "9x^2 + 18x + 4y^2 - 16y = 1 \n" ); document.write( "9*(x^2 + 2x) + 4*(y^2 - 4y) = 1 \n" ); document.write( "9*(x^2 + 2x + 1) -9 + 4*(y^2 - 4y + 4) -16 = 1 \n" ); document.write( "9*(x^2 + 2x + 1) + 4*(y^2 - 4y + 4) = 26 \n" ); document.write( "(x+1)^2/4 + (y-2)^2/9 = 13/18 \n" ); document.write( "----------------- \n" ); document.write( "It's not solving, it's not a solution. \n" ); document.write( "It's just put into standard form. \n" ); document.write( " |