document.write( "Question 6640: I know that this doesn't go in this section of questions, but there wasn't a sectioin for trinomials...So if you can, please help me on this question..
\n" ); document.write( " Find the value of c that makes each trinomial a perfect square.
\n" ); document.write( " x^2+4x+c
\n" ); document.write( "I'm not sure how to do this...its quite confusing. Thanks for helping me. \n" ); document.write( "

Algebra.Com's Answer #3609 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
To find the value of c that makes $\"x%5E2+%2B+4x+%2B+c\"$ a perfect square, just take the coefficient of the x-term (4), divide it by 2 and then square the result.
\n" ); document.write( " $\"%284%2F2%29%5E2+=+4\"$ \r
\n" ); document.write( "\n" ); document.write( "So, the trinomial becomes: $\"x%5E2+%2B+4x+%2B+4\"$ \r
\n" ); document.write( "\n" ); document.write( "Now this factors into: $\"%28x+%2B+2%29%28x+%2B+2%29\"$ or $\"%28x+%2B+2%29%5E2\"$ \n" ); document.write( "

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