document.write( "Question 155328: find the value of m for which the equation has equal roots (m+1)x2+2(m+3)+(m+8)=0 \n" ); document.write( "

Algebra.Com's Answer #114374 by oscargut(2103) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( "Note: i think you forgot to put an x after (m+3)
\n" ); document.write( " $\"ax%5E2%2Bbx%2Bc\"$ has equal roots when $\"b%5E2-4ac=0\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%28m%2B1%29x%5E2%2B2%28m%2B3%29x%2B%28m%2B8%29=0\"$ has equal roots when
\n" ); document.write( " $\"%282%28m%2B3%29%29%5E2-4%28m%2B1%29%28m%2B8%29=0\"$
\n" ); document.write( "then
\n" ); document.write( " $\"%282m%2B6%29%5E2-4%28m%5E2%2B9m%2B8%29=0\"$
\n" ); document.write( "then
\n" ); document.write( " $\"4m%5E2%2B24m%2B36-4m%5E2-36m-32=0\"$
\n" ); document.write( "then
\n" ); document.write( " $\"-12m%2B4=0\"$
\n" ); document.write( "then
\n" ); document.write( " $\"m=4%2F12=1%2F3\"$
\n" ); document.write( "Answer:m=3 \n" ); document.write( "

\n" );