document.write( "Question 1048515: Perform the indicated operations and simplify: (7a^2-3b^2+10)-(-2a^2+b^2-12)\r
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Algebra.Com's Answer #664110 by MathLover1(20850) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( " $\"%287a%5E2-3b%5E2%2B10%29-%28-2a%5E2%2Bb%5E2-12%29\"$ \r
\n" ); document.write( "\n" ); document.write( "recall the rules:
\n" ); document.write( "When parentheses are preceded by a plus sign + simply remove them. Nothing changes.
\n" ); document.write( "When parentheses are preceded by a minus sign - change the sign of every term within the parentheses.\r
\n" ); document.write( "\n" ); document.write( "so, you get\r
\n" ); document.write( "\n" ); document.write( " $\"7a%5E2-3b%5E2%2B10%2B2a%5E2-b%5E2%2B12\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"7a%5E2%2B2a%5E2-3b%5E2-b%5E2%2B12%2B10\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"9a%5E2-4b%5E2%2B22\"$ \r
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