document.write( "Question 774877: Find the constant term that should be added to make the following expression a perfect-square trinomial. x^2 + 7x \n" ); document.write( "

Algebra.Com's Answer #472573 by josmiceli(19441) $\"\"$ $\"About$

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Take 1/2 of the coefficient of the $\"+x+\"$ term
\n" ); document.write( "and square it
\n" ); document.write( " $\"+x%5E2+%2B+7x+%2B+%28+7%2F2+%29%5E2+\"$
\n" ); document.write( " $\"+x%5E2+%2B+7x+%2B+49%2F4+\"$
\n" ); document.write( "add 49/4 to make it a perfect square trinomial
\n" ); document.write( "-------------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+%28+x+%2B+7%2F2+%29%5E2+\"$
\n" ); document.write( " $\"+x%5E2+%2B+7x+%2B+49%2F4+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

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