document.write( "Question 426931: if the discriminant of (5u^2)+by+2=0 is 41, what are all the values of b \n" ); document.write( "

Algebra.Com's Answer #296911 by dnanos(83) $\"\"$ $\"About$

You can put this solution on YOUR website!
I think it must be written $\"5y%5E2%2Bby%2B2=0\"$
\n" ); document.write( "I shall write the answer for that.
\n" ); document.write( "Discriminant of $\"ax%5E2%2Bbx%2Bc=0\"$
\n" ); document.write( "is $\"b%5E2-4ac=41\"$ ,with a=5,and c=2
\n" ); document.write( "that is
\n" ); document.write( " $\"b%5E2-4%2A5%2A2=41\"$
\n" ); document.write( " $\"b%5E2-40=41\"$
\n" ); document.write( " $\"b%5E2=41%2B40\"$
\n" ); document.write( " $\"b%5E2=81\"$
\n" ); document.write( " $\"b=%2Bsqrt%2881%29\"$ or $\"b=-sqrt%2881%29\"$
\n" ); document.write( "that is
\n" ); document.write( "b=9 or b=-9 \n" ); document.write( "

\n" );