document.write( "Question 252911: 2x^2+3xy-4y^2 when x=2 and y=-4 \n" ); document.write( "

Algebra.Com's Answer #185036 by drk(1908) $\"\"$ $\"About$

You can put this solution on YOUR website!
Here is the original equation:
\n" ); document.write( " $\"2x%5E2+%2B+3xy+-+4y%5E2\"$
\n" ); document.write( "Let: x = 2 and y = -4
\n" ); document.write( "--
\n" ); document.write( "step 1: replace x with 2 and y with -4 to get
\n" ); document.write( " $\"2%2A%282%29%5E2%2B3%282%29%28-4%29-4%2A%28-4%29%5E2\"$
\n" ); document.write( "use order of operations to simplify:
\n" ); document.write( " $\"2%2A4+%2B+3%28-8%29+-+4%2816%29\"$
\n" ); document.write( " $\"8+-+24+-+64\"$
\n" ); document.write( " $\"-16+-+64\"$
\n" ); document.write( " $\"-80\"$ \n" ); document.write( "

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