document.write( "Question 499027: b(b+9)=4(5+2b) \n" ); document.write( "

Algebra.Com's Answer #337327 by deborabr(181) $\"\"$ $\"About$

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b(b+9)=4(5+2b)
\n" ); document.write( "b^2 + 9b = 20 + 8b
\n" ); document.write( "b^2 +9b - 8b - 20 = 0
\n" ); document.write( "b^2 + b - 20 = 0
\n" ); document.write( "1^2 - 4*1*-20 = 81
\n" ); document.write( "(-1 +/- 9)/2
\n" ); document.write( "x'= -5
\n" ); document.write( "x\" = 4 \n" ); document.write( "

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