document.write( "Question 1105889: Determine a value of b that will make the expression 16x^2+bx+49 become a perfect square trinomial \n" ); document.write( "
Algebra.Com's Answer #720784 by josgarithmetic(39617)\"\" \"About 
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\"16x%5E2%2Bbx%2B49=%284x%2B7%29%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "\"16x%5E2%2B28x%2B28x%2B49\"\r
\n" ); document.write( "\n" ); document.write( "\"16x%5E2%2B56x%2B49\"\r
\n" ); document.write( "\n" ); document.write( "According to corresponding places, \"56=b\".
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