document.write( "Question 954853: what two numbers when added equal x but when multiplied equal -12? \n" ); document.write( "

Algebra.Com's Answer #583221 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Call the numbers $\"+a+\"$ and $\"+b+\"$
\n" ); document.write( " $\"+a+%2B+b+=+x+\"$
\n" ); document.write( " $\"+a%2Ab+=+-12+\"$
\n" ); document.write( "---------------
\n" ); document.write( " $\"+b+=+x+-+a+\"$
\n" ); document.write( "By substitution:
\n" ); document.write( " $\"+a%2A%28+x+-+a+%29+=+-12+\"$
\n" ); document.write( " $\"+a%5E2+-+a%2Ax+-+12+=+0+\"$
\n" ); document.write( " $\"+%28+a+-+4+%29%2A%28+a+%2B+3+%29+=+0+\"$
\n" ); document.write( " $\"+a+=+4+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+a%2Ab+=+-12+\"$
\n" ); document.write( " $\"+b+=+-12%2Fa+\"$
\n" ); document.write( " $\"+b+=+-12%2F4+\"$
\n" ); document.write( " $\"+b+=+-3+\"$
\n" ); document.write( "----------------
\n" ); document.write( "The numbers are 4 and -3
\n" ); document.write( "check:
\n" ); document.write( " $\"+a+%2B+b+=+x+\"$
\n" ); document.write( " $\"+4+%2B+-3+=+x+\"$
\n" ); document.write( " $\"+x+=+1+\"$
\n" ); document.write( " $\"+a%2A%28+x+-+a+%29+=+-12+\"$
\n" ); document.write( " $\"+4%2A%28+1+-+4+%29+=+-12+\"$
\n" ); document.write( " $\"+4%2A%28-3%29+=+-12+\"$
\n" ); document.write( " $\"+-12+=+-12+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );