document.write( "Question 702893: find the missing root if 8 is a root of x^2+16x+c=0
\n" ); document.write( "I tried the sum formula which is -b/ a so i took -16/1 and got - 16 for my answer which was not right
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Algebra.Com's Answer #433217 by mouk(232)\"\" \"About 
You can put this solution on YOUR website!
you are nearly correct: \r
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\n" ); document.write( "\n" ); document.write( "Using the formula for the sum of roots:
\n" ); document.write( "\"+alpha+%2B+beta+=+-b%2Fa+\"
\n" ); document.write( "gives:\r
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\n" ); document.write( "\n" ); document.write( "\"+8+%2B+beta+=+-16%2F1+\"
\n" ); document.write( "\"+beta+=+-16+-+8+\"
\n" ); document.write( "\"+beta+=+-24+\"
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