document.write( "Question 915744: I need help trying to solve this problem. Thank you in advance, for helping me out. I really appreciate your time and efforts. Have a terrific day :) Here is the question? Choose the correct method to factor each of the following:\r
\n" ); document.write( "\n" ); document.write( "-r^2 + 14 - 45
\n" ); document.write( "

Algebra.Com's Answer #555739 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Try to look for two binomial factors. First, factorize \"-1\" to make the task easier.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Next, can you find a pair of numbers whose sum is 14 (did you forget to include factor of r? ) and whose product is 45.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"-1%28r%5E2-14r%2B45%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "3*15=45
\n" ); document.write( "5*9=45
\n" ); document.write( "Anything else?
\n" ); document.write( "No.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The question you really wanted was, what method needed to factor \"m%5E2%2B3m-20\".
\n" ); document.write( "Not factorable. The method is the same, just that no need to factor any \"-1\". What two integers have product of \"-20\" and sum of \"3\"? What are they? They MUST be integers.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Let's check what we can find.
\n" ); document.write( "Factorization of 20, ignoring sign:
\n" ); document.write( "1*20;
\n" ); document.write( "2*10;
\n" ); document.write( "4*5.
\n" ); document.write( "No others.
\n" ); document.write( "Any sum or difference to give positive 3?
\n" ); document.write( "-
\n" ); document.write( "-
\n" ); document.write( "NO.
\n" ); document.write( "Not factorable. PRIME.
\n" ); document.write( "
\n" );