document.write( "Question 1119335: If 2x+3y=12 and xy =6, find the value of 4x square +9y square .\r
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Algebra.Com's Answer #734837 by ikleyn(52781) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "From \r\n" );
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document.write( "2x + 3y = 12  you have (by squaring both sides)\r\n" );
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document.write( " = 144.\r\n" );
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document.write( "Now replace  xy in the last formula by 6 (as it is given !) to get\r\n" );
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document.write( " = 144,\r\n" );
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document.write( " = 144 - 2*2*3*6 = 72.\r\n" );
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document.write( "It is your \r\n" );
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document.write( "Answer.   = 72.\r\n" );
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\n" ); document.write( "\n" ); document.write( "To write x_squared, write x^2. Find the symbol \" ^ \" in your keyboard, where the button (digit) \"6\" is, in the upper register.\r
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